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Posted to commits@commons.apache.org by ni...@apache.org on 2011/01/09 00:38:55 UTC
svn commit: r1056834 [2/3] - in /commons/proper/lang/branches/LANG_2_X/src:
main/java/org/apache/commons/lang/SystemUtils.java
test/java/org/apache/commons/lang/SystemUtilsTest.java
Modified: commons/proper/lang/branches/LANG_2_X/src/main/java/org/apache/commons/lang/SystemUtils.java
URL: http://svn.apache.org/viewvc/commons/proper/lang/branches/LANG_2_X/src/main/java/org/apache/commons/lang/SystemUtils.java?rev=1056834&r1=1056833&r2=1056834&view=diff
==============================================================================
--- commons/proper/lang/branches/LANG_2_X/src/main/java/org/apache/commons/lang/SystemUtils.java (original)
+++ commons/proper/lang/branches/LANG_2_X/src/main/java/org/apache/commons/lang/SystemUtils.java Sat Jan 8 23:38:55 2011
@@ -19,12 +19,16 @@ package org.apache.commons.lang;
import java.io.File;
/**
- * <p>Helpers for <code>java.lang.System</code>.</p>
+ * <p>
+ * Helpers for <code>java.lang.System</code>.
+ * </p>
*
- * <p>If a system property cannot be read due to security restrictions,
+ * <p>
+ * If a system property cannot be read due to security restrictions,
* the corresponding field in this class will be set to <code>null</code>
- * and a message will be written to <code>System.err</code>.</p>
- *
+ * and a message will be written to <code>System.err</code>.
+ * </p>
+ *
* @author Apache Software Foundation
* @author Based on code from Avalon Excalibur
* @author Based on code from Lucene
@@ -39,15 +43,17 @@ import java.io.File;
*/
public class SystemUtils {
+ private static final int JAVA_VERSION_TRIM_SIZE = 3;
+
/**
* The prefix String for all Windows OS.
*/
private static final String OS_NAME_WINDOWS_PREFIX = "Windows";
-
+
// System property constants
- //-----------------------------------------------------------------------
+ // -----------------------------------------------------------------------
// These MUST be declared first. Other constants depend on this.
-
+
/**
* The System property key for the user home directory.
*/
@@ -57,29 +63,37 @@ public class SystemUtils {
* The System property key for the user directory.
*/
private static final String USER_DIR_KEY = "user.dir";
-
+
/**
* The System property key for the Java IO temporary directory.
*/
private static final String JAVA_IO_TMPDIR_KEY = "java.io.tmpdir";
-
+
/**
* The System property key for the Java home directory.
*/
private static final String JAVA_HOME_KEY = "java.home";
-
+
/**
- * <p>The <code>awt.toolkit</code> System Property.</p>
- * <p>Holds a class name, on Windows XP this is <code>sun.awt.windows.WToolkit</code>.</p>
- * <p><b>On platforms without a GUI, this value is <code>null</code>.</b></p>
+ * <p>
+ * The <code>awt.toolkit</code> System Property.
+ * </p>
+ * <p>
+ * Holds a class name, on Windows XP this is <code>sun.awt.windows.WToolkit</code>.
+ * </p>
+ * <p>
+ * <b>On platforms without a GUI, this value is <code>null</code>.</b>
+ * </p>
*
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
- * will be out of sync with that System property.
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value will
+ * be out of sync with that System property.
* </p>
*
* @since 2.1
@@ -87,15 +101,21 @@ public class SystemUtils {
public static final String AWT_TOOLKIT = getSystemProperty("awt.toolkit");
/**
- * <p>The <code>file.encoding</code> System Property.</p>
- * <p>File encoding, such as <code>Cp1252</code>.</p>
+ * <p>
+ * The <code>file.encoding</code> System Property.
+ * </p>
+ * <p>
+ * File encoding, such as <code>Cp1252</code>.
+ * </p>
*
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -105,15 +125,18 @@ public class SystemUtils {
public static final String FILE_ENCODING = getSystemProperty("file.encoding");
/**
- * <p>The <code>file.separator</code> System Property.
- * File separator (<code>"/"</code> on UNIX).</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>file.separator</code> System Property. File separator (<code>"/"</code> on UNIX).
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -122,14 +145,18 @@ public class SystemUtils {
public static final String FILE_SEPARATOR = getSystemProperty("file.separator");
/**
- * <p>The <code>java.awt.fonts</code> System Property.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.awt.fonts</code> System Property.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -138,14 +165,18 @@ public class SystemUtils {
public static final String JAVA_AWT_FONTS = getSystemProperty("java.awt.fonts");
/**
- * <p>The <code>java.awt.graphicsenv</code> System Property.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.awt.graphicsenv</code> System Property.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -158,13 +189,15 @@ public class SystemUtils {
* The <code>java.awt.headless</code> System Property.
* The value of this property is the String <code>"true"</code> or <code>"false"</code>.
* </p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -175,14 +208,18 @@ public class SystemUtils {
public static final String JAVA_AWT_HEADLESS = getSystemProperty("java.awt.headless");
/**
- * <p>The <code>java.awt.printerjob</code> System Property.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.awt.printerjob</code> System Property.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -191,14 +228,18 @@ public class SystemUtils {
public static final String JAVA_AWT_PRINTERJOB = getSystemProperty("java.awt.printerjob");
/**
- * <p>The <code>java.class.path</code> System Property. Java class path.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.class.path</code> System Property. Java class path.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -207,15 +248,18 @@ public class SystemUtils {
public static final String JAVA_CLASS_PATH = getSystemProperty("java.class.path");
/**
- * <p>The <code>java.class.version</code> System Property.
- * Java class format version number.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.class.version</code> System Property. Java class format version number.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -224,15 +268,19 @@ public class SystemUtils {
public static final String JAVA_CLASS_VERSION = getSystemProperty("java.class.version");
/**
- * <p>The <code>java.compiler</code> System Property. Name of JIT compiler to use.
- * First in JDK version 1.2. Not used in Sun JDKs after 1.2.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.compiler</code> System Property. Name of JIT compiler to use.
+ * First in JDK version 1.2. Not used in Sun JDKs after 1.2.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -241,15 +289,18 @@ public class SystemUtils {
public static final String JAVA_COMPILER = getSystemProperty("java.compiler");
/**
- * <p>The <code>java.endorsed.dirs</code> System Property. Path of endorsed directory
- * or directories.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.endorsed.dirs</code> System Property. Path of endorsed directory or directories.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -258,15 +309,18 @@ public class SystemUtils {
public static final String JAVA_ENDORSED_DIRS = getSystemProperty("java.endorsed.dirs");
/**
- * <p>The <code>java.ext.dirs</code> System Property. Path of extension directory
- * or directories.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.ext.dirs</code> System Property. Path of extension directory or directories.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -275,14 +329,18 @@ public class SystemUtils {
public static final String JAVA_EXT_DIRS = getSystemProperty("java.ext.dirs");
/**
- * <p>The <code>java.home</code> System Property. Java installation directory.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.home</code> System Property. Java installation directory.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -291,14 +349,18 @@ public class SystemUtils {
public static final String JAVA_HOME = getSystemProperty(JAVA_HOME_KEY);
/**
- * <p>The <code>java.io.tmpdir</code> System Property. Default temp file path.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.io.tmpdir</code> System Property. Default temp file path.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -307,15 +369,18 @@ public class SystemUtils {
public static final String JAVA_IO_TMPDIR = getSystemProperty(JAVA_IO_TMPDIR_KEY);
/**
- * <p>The <code>java.library.path</code> System Property. List of paths to search
- * when loading libraries.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.library.path</code> System Property. List of paths to search when loading libraries.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -324,15 +389,18 @@ public class SystemUtils {
public static final String JAVA_LIBRARY_PATH = getSystemProperty("java.library.path");
/**
- * <p>The <code>java.runtime.name</code> System Property. Java Runtime Environment
- * name.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.runtime.name</code> System Property. Java Runtime Environment name.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -342,15 +410,18 @@ public class SystemUtils {
public static final String JAVA_RUNTIME_NAME = getSystemProperty("java.runtime.name");
/**
- * <p>The <code>java.runtime.version</code> System Property. Java Runtime Environment
- * version.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.runtime.version</code> System Property. Java Runtime Environment version.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -360,15 +431,18 @@ public class SystemUtils {
public static final String JAVA_RUNTIME_VERSION = getSystemProperty("java.runtime.version");
/**
- * <p>The <code>java.specification.name</code> System Property. Java Runtime Environment
- * specification name.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.specification.name</code> System Property. Java Runtime Environment specification name.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -377,15 +451,18 @@ public class SystemUtils {
public static final String JAVA_SPECIFICATION_NAME = getSystemProperty("java.specification.name");
/**
- * <p>The <code>java.specification.vendor</code> System Property. Java Runtime Environment
- * specification vendor.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.specification.vendor</code> System Property. Java Runtime Environment specification vendor.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -394,15 +471,18 @@ public class SystemUtils {
public static final String JAVA_SPECIFICATION_VENDOR = getSystemProperty("java.specification.vendor");
/**
- * <p>The <code>java.specification.version</code> System Property. Java Runtime Environment
- * specification version.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.specification.version</code> System Property. Java Runtime Environment specification version.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -411,14 +491,18 @@ public class SystemUtils {
public static final String JAVA_SPECIFICATION_VERSION = getSystemProperty("java.specification.version");
/**
- * <p>The <code>java.util.prefs.PreferencesFactory</code> System Property. A class name.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.util.prefs.PreferencesFactory</code> System Property. A class name.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -429,14 +513,18 @@ public class SystemUtils {
getSystemProperty("java.util.prefs.PreferencesFactory");
/**
- * <p>The <code>java.vendor</code> System Property. Java vendor-specific string.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.vendor</code> System Property. Java vendor-specific string.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -445,30 +533,38 @@ public class SystemUtils {
public static final String JAVA_VENDOR = getSystemProperty("java.vendor");
/**
- * <p>The <code>java.vendor.url</code> System Property. Java vendor URL.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.vendor.url</code> System Property. Java vendor URL.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
* @since Java 1.1
- */
+ */
public static final String JAVA_VENDOR_URL = getSystemProperty("java.vendor.url");
/**
- * <p>The <code>java.version</code> System Property. Java version number.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.version</code> System Property. Java version number.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -477,15 +573,18 @@ public class SystemUtils {
public static final String JAVA_VERSION = getSystemProperty("java.version");
/**
- * <p>The <code>java.vm.info</code> System Property. Java Virtual Machine implementation
- * info.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.vm.info</code> System Property. Java Virtual Machine implementation info.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -495,15 +594,18 @@ public class SystemUtils {
public static final String JAVA_VM_INFO = getSystemProperty("java.vm.info");
/**
- * <p>The <code>java.vm.name</code> System Property. Java Virtual Machine implementation
- * name.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.vm.name</code> System Property. Java Virtual Machine implementation name.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -512,15 +614,18 @@ public class SystemUtils {
public static final String JAVA_VM_NAME = getSystemProperty("java.vm.name");
/**
- * <p>The <code>java.vm.specification.name</code> System Property. Java Virtual Machine
- * specification name.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.vm.specification.name</code> System Property. Java Virtual Machine specification name.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -529,15 +634,18 @@ public class SystemUtils {
public static final String JAVA_VM_SPECIFICATION_NAME = getSystemProperty("java.vm.specification.name");
/**
- * <p>The <code>java.vm.specification.vendor</code> System Property. Java Virtual
- * Machine specification vendor.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.vm.specification.vendor</code> System Property. Java Virtual Machine specification vendor.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -546,15 +654,18 @@ public class SystemUtils {
public static final String JAVA_VM_SPECIFICATION_VENDOR = getSystemProperty("java.vm.specification.vendor");
/**
- * <p>The <code>java.vm.specification.version</code> System Property. Java Virtual Machine
- * specification version.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.vm.specification.version</code> System Property. Java Virtual Machine specification version.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -563,15 +674,18 @@ public class SystemUtils {
public static final String JAVA_VM_SPECIFICATION_VERSION = getSystemProperty("java.vm.specification.version");
/**
- * <p>The <code>java.vm.vendor</code> System Property. Java Virtual Machine implementation
- * vendor.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.vm.vendor</code> System Property. Java Virtual Machine implementation vendor.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -580,15 +694,18 @@ public class SystemUtils {
public static final String JAVA_VM_VENDOR = getSystemProperty("java.vm.vendor");
/**
- * <p>The <code>java.vm.version</code> System Property. Java Virtual Machine
- * implementation version.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>java.vm.version</code> System Property. Java Virtual Machine implementation version.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -597,15 +714,18 @@ public class SystemUtils {
public static final String JAVA_VM_VERSION = getSystemProperty("java.vm.version");
/**
- * <p>The <code>line.separator</code> System Property. Line separator
- * (<code>"\n"</code> on UNIX).</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>line.separator</code> System Property. Line separator (<code>"\n"</code> on UNIX).
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -614,14 +734,18 @@ public class SystemUtils {
public static final String LINE_SEPARATOR = getSystemProperty("line.separator");
/**
- * <p>The <code>os.arch</code> System Property. Operating system architecture.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>os.arch</code> System Property. Operating system architecture.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -630,14 +754,18 @@ public class SystemUtils {
public static final String OS_ARCH = getSystemProperty("os.arch");
/**
- * <p>The <code>os.name</code> System Property. Operating system name.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>os.name</code> System Property. Operating system name.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -646,14 +774,18 @@ public class SystemUtils {
public static final String OS_NAME = getSystemProperty("os.name");
/**
- * <p>The <code>os.version</code> System Property. Operating system version.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>os.version</code> System Property. Operating system version.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -662,15 +794,18 @@ public class SystemUtils {
public static final String OS_VERSION = getSystemProperty("os.version");
/**
- * <p>The <code>path.separator</code> System Property. Path separator
- * (<code>":"</code> on UNIX).</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>path.separator</code> System Property. Path separator (<code>":"</code> on UNIX).
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -679,16 +814,20 @@ public class SystemUtils {
public static final String PATH_SEPARATOR = getSystemProperty("path.separator");
/**
- * <p>The <code>user.country</code> or <code>user.region</code> System Property.
- * User's country code, such as <code>GB</code>. First in JDK version 1.2 as
- * <code>user.region</code>. Renamed to <code>user.country</code> in 1.4</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>user.country</code> or <code>user.region</code> System Property.
+ * User's country code, such as <code>GB</code>. First in
+ * Java version 1.2 as <code>user.region</code>. Renamed to <code>user.country</code> in 1.4
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -700,15 +839,18 @@ public class SystemUtils {
getSystemProperty("user.region") : getSystemProperty("user.country");
/**
- * <p>The <code>user.dir</code> System Property. User's current working
- * directory.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>user.dir</code> System Property. User's current working directory.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -717,14 +859,18 @@ public class SystemUtils {
public static final String USER_DIR = getSystemProperty(USER_DIR_KEY);
/**
- * <p>The <code>user.home</code> System Property. User's home directory.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>user.home</code> System Property. User's home directory.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -733,15 +879,18 @@ public class SystemUtils {
public static final String USER_HOME = getSystemProperty(USER_HOME_KEY);
/**
- * <p>The <code>user.language</code> System Property. User's language code,
- * such as <code>"en"</code>.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>user.language</code> System Property. User's language code, such as <code>"en"</code>.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -751,14 +900,18 @@ public class SystemUtils {
public static final String USER_LANGUAGE = getSystemProperty("user.language");
/**
- * <p>The <code>user.name</code> System Property. User's account name.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>user.name</code> System Property. User's account name.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
+ *
+ * <p>
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -767,15 +920,18 @@ public class SystemUtils {
public static final String USER_NAME = getSystemProperty("user.name");
/**
- * <p>The <code>user.timezone</code> System Property.
- * For example: <code>"America/Los_Angeles"</code>.</p>
- *
- * <p>Defaults to <code>null</code> if the runtime does not have
- * security access to read this property or the property does not exist.</p>
+ * <p>
+ * The <code>user.timezone</code> System Property. For example: <code>"America/Los_Angeles"</code>.
+ * </p>
+ *
+ * <p>
+ * Defaults to <code>null</code> if the runtime does not have
+ * security access to read this property or the property does not exist.
+ * </p>
*
* <p>
- * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)}
- * or {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
+ * This value is initialized when the class is loaded. If {@link System#setProperty(String,String)} or
+ * {@link System#setProperties(java.util.Properties)} is called after this class is loaded, the value
* will be out of sync with that System property.
* </p>
*
@@ -784,119 +940,156 @@ public class SystemUtils {
public static final String USER_TIMEZONE = getSystemProperty("user.timezone");
// Java version
- //-----------------------------------------------------------------------
+ // -----------------------------------------------------------------------
// This MUST be declared after those above as it depends on the
// values being set up
/**
- * <p>Gets the Java version as a <code>String</code> trimming leading letters.</p>
- *
- * <p>The field will return <code>null</code> if {@link #JAVA_VERSION} is <code>null</code>.</p>
+ * <p>
+ * Gets the Java version as a <code>String</code> trimming leading letters.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>null</code> if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*
* @since 2.1
*/
public static final String JAVA_VERSION_TRIMMED = getJavaVersionTrimmed();
// Java version values
- //-----------------------------------------------------------------------
+ // -----------------------------------------------------------------------
// These MUST be declared after the trim above as they depend on the
// value being set up
/**
- * <p>Gets the Java version as a <code>float</code>.</p>
- *
- * <p>Example return values:</p>
+ * <p>
+ * Gets the Java version as a <code>float</code>.
+ * </p>
+ *
+ * <p>
+ * Example return values:
+ * </p>
* <ul>
- * <li><code>1.2f</code> for JDK 1.2
- * <li><code>1.31f</code> for JDK 1.3.1
+ * <li><code>1.2f</code> for Java 1.2
+ * <li><code>1.31f</code> for Java 1.3.1
* </ul>
- *
- * <p>The field will return zero if {@link #JAVA_VERSION} is <code>null</code>.</p>
+ *
+ * <p>
+ * The field will return zero if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
public static final float JAVA_VERSION_FLOAT = getJavaVersionAsFloat();
/**
- * <p>Gets the Java version as an <code>int</code>.</p>
- *
- * <p>Example return values:</p>
+ * <p>
+ * Gets the Java version as an <code>int</code>.
+ * </p>
+ *
+ * <p>
+ * Example return values:
+ * </p>
* <ul>
- * <li><code>120</code> for JDK 1.2
- * <li><code>131</code> for JDK 1.3.1
+ * <li><code>120</code> for Java 1.2
+ * <li><code>131</code> for Java 1.3.1
* </ul>
- *
- * <p>The field will return zero if {@link #JAVA_VERSION} is <code>null</code>.</p>
+ *
+ * <p>
+ * The field will return zero if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
public static final int JAVA_VERSION_INT = getJavaVersionAsInt();
// Java version checks
- //-----------------------------------------------------------------------
+ // -----------------------------------------------------------------------
// These MUST be declared after those above as they depend on the
// values being set up
-
+
/**
- * <p>Is <code>true</code> if this is Java version 1.1 (also 1.1.x versions).</p>
- *
- * <p>The field will return <code>false</code> if {@link #JAVA_VERSION} is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Java version 1.1 (also 1.1.x versions).
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*/
public static final boolean IS_JAVA_1_1 = getJavaVersionMatches("1.1");
/**
- * <p>Is <code>true</code> if this is Java version 1.2 (also 1.2.x versions).</p>
- *
- * <p>The field will return <code>false</code> if {@link #JAVA_VERSION} is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Java version 1.2 (also 1.2.x versions).
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*/
public static final boolean IS_JAVA_1_2 = getJavaVersionMatches("1.2");
/**
- * <p>Is <code>true</code> if this is Java version 1.3 (also 1.3.x versions).</p>
- *
- * <p>The field will return <code>false</code> if {@link #JAVA_VERSION} is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Java version 1.3 (also 1.3.x versions).
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*/
public static final boolean IS_JAVA_1_3 = getJavaVersionMatches("1.3");
/**
- * <p>Is <code>true</code> if this is Java version 1.4 (also 1.4.x versions).</p>
- *
- * <p>The field will return <code>false</code> if {@link #JAVA_VERSION} is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Java version 1.4 (also 1.4.x versions).
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*/
public static final boolean IS_JAVA_1_4 = getJavaVersionMatches("1.4");
/**
- * <p>Is <code>true</code> if this is Java version 1.5 (also 1.5.x versions).</p>
- *
- * <p>The field will return <code>false</code> if {@link #JAVA_VERSION} is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Java version 1.5 (also 1.5.x versions).
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*/
public static final boolean IS_JAVA_1_5 = getJavaVersionMatches("1.5");
/**
- * <p>Is <code>true</code> if this is Java version 1.6 (also 1.6.x versions).</p>
- *
- * <p>The field will return <code>false</code> if {@link #JAVA_VERSION} is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Java version 1.6 (also 1.6.x versions).
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*/
public static final boolean IS_JAVA_1_6 = getJavaVersionMatches("1.6");
/**
- * <p>Is <code>true</code> if this is Java version 1.7 (also 1.7.x versions).</p>
- *
- * <p>The field will return <code>false</code> if {@link #JAVA_VERSION} is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Java version 1.7 (also 1.7.x versions).
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if {@link #JAVA_VERSION} is <code>null</code>.
+ * </p>
*
* @since 2.5
*/
public static final boolean IS_JAVA_1_7 = getJavaVersionMatches("1.7");
// Operating system checks
- //-----------------------------------------------------------------------
+ // -----------------------------------------------------------------------
// These MUST be declared after those above as they depend on the
// values being set up
// OS names from http://www.vamphq.com/os.html
@@ -904,101 +1097,131 @@ public class SystemUtils {
// if you want another added or a mistake corrected
/**
- * <p>Is <code>true</code> if this is AIX.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is AIX.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_AIX = getOSMatches("AIX");
+ public static final boolean IS_OS_AIX = getOSMatchesName("AIX");
/**
- * <p>Is <code>true</code> if this is HP-UX.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is HP-UX.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_HP_UX = getOSMatches("HP-UX");
+ public static final boolean IS_OS_HP_UX = getOSMatchesName("HP-UX");
/**
- * <p>Is <code>true</code> if this is Irix.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Irix.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_IRIX = getOSMatches("Irix");
+ public static final boolean IS_OS_IRIX = getOSMatchesName("Irix");
/**
- * <p>Is <code>true</code> if this is Linux.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Linux.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_LINUX = getOSMatches("Linux") || getOSMatches("LINUX");
+ public static final boolean IS_OS_LINUX = getOSMatchesName("Linux") || getOSMatchesName("LINUX");
/**
- * <p>Is <code>true</code> if this is Mac.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Mac.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_MAC = getOSMatches("Mac");
+ public static final boolean IS_OS_MAC = getOSMatchesName("Mac");
/**
- * <p>Is <code>true</code> if this is Mac.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Mac.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_MAC_OSX = getOSMatches("Mac OS X");
+ public static final boolean IS_OS_MAC_OSX = getOSMatchesName("Mac OS X");
/**
- * <p>Is <code>true</code> if this is OS/2.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is OS/2.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_OS2 = getOSMatches("OS/2");
+ public static final boolean IS_OS_OS2 = getOSMatchesName("OS/2");
/**
- * <p>Is <code>true</code> if this is Solaris.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Solaris.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_SOLARIS = getOSMatches("Solaris");
+ public static final boolean IS_OS_SOLARIS = getOSMatchesName("Solaris");
/**
- * <p>Is <code>true</code> if this is SunOS.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is SunOS.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_SUN_OS = getOSMatches("SunOS");
+ public static final boolean IS_OS_SUN_OS = getOSMatchesName("SunOS");
/**
- * <p>Is <code>true</code> if this is a POSIX compilant system,
- * as in any of AIX, HP-UX, Irix, Linux, MacOSX, Solaris or SUN OS.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is a UNIX like system,
+ * as in any of AIX, HP-UX, Irix, Linux, MacOSX, Solaris or SUN OS.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.1
*/
@@ -1007,114 +1230,158 @@ public class SystemUtils {
IS_OS_MAC_OSX || IS_OS_SOLARIS || IS_OS_SUN_OS;
/**
- * <p>Is <code>true</code> if this is Windows.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Windows.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_WINDOWS = getOSMatches(OS_NAME_WINDOWS_PREFIX);
+ public static final boolean IS_OS_WINDOWS = getOSMatchesName(OS_NAME_WINDOWS_PREFIX);
/**
- * <p>Is <code>true</code> if this is Windows 2000.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Windows 2000.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
public static final boolean IS_OS_WINDOWS_2000 = getOSMatches(OS_NAME_WINDOWS_PREFIX, "5.0");
/**
- * <p>Is <code>true</code> if this is Windows 95.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Windows 95.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
public static final boolean IS_OS_WINDOWS_95 = getOSMatches(OS_NAME_WINDOWS_PREFIX + " 9", "4.0");
- // JDK 1.2 running on Windows98 returns 'Windows 95', hence the above
+ // Java 1.2 running on Windows98 returns 'Windows 95', hence the above
/**
- * <p>Is <code>true</code> if this is Windows 98.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Windows 98.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
public static final boolean IS_OS_WINDOWS_98 = getOSMatches(OS_NAME_WINDOWS_PREFIX + " 9", "4.1");
- // JDK 1.2 running on Windows98 returns 'Windows 95', hence the above
+ // Java 1.2 running on Windows98 returns 'Windows 95', hence the above
/**
- * <p>Is <code>true</code> if this is Windows ME.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Windows ME.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
public static final boolean IS_OS_WINDOWS_ME = getOSMatches(OS_NAME_WINDOWS_PREFIX, "4.9");
- // JDK 1.2 running on WindowsME may return 'Windows 95', hence the above
+ // Java 1.2 running on WindowsME may return 'Windows 95', hence the above
/**
- * <p>Is <code>true</code> if this is Windows NT.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Windows NT.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
- public static final boolean IS_OS_WINDOWS_NT = getOSMatches(OS_NAME_WINDOWS_PREFIX + " NT");
- // Windows 2000 returns 'Windows 2000' but may suffer from same JDK1.2 problem
+ public static final boolean IS_OS_WINDOWS_NT = getOSMatchesName(OS_NAME_WINDOWS_PREFIX + " NT");
+ // Windows 2000 returns 'Windows 2000' but may suffer from same Java1.2 problem
/**
- * <p>Is <code>true</code> if this is Windows XP.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
+ * <p>
+ * Is <code>true</code> if this is Windows XP.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
*
* @since 2.0
*/
public static final boolean IS_OS_WINDOWS_XP = getOSMatches(OS_NAME_WINDOWS_PREFIX, "5.1");
- //-----------------------------------------------------------------------
+ // -----------------------------------------------------------------------
/**
- * <p>Is <code>true</code> if this is Windows Vista.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
- *
+ * <p>
+ * Is <code>true</code> if this is Windows Vista.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
+ *
* @since 2.4
*/
- public static final boolean IS_OS_WINDOWS_VISTA = getOSMatches(OS_NAME_WINDOWS_PREFIX, "6.0");
+ public static final boolean IS_OS_WINDOWS_VISTA = getOSMatches(OS_NAME_WINDOWS_PREFIX, "6.0");
/**
- * <p>Is <code>true</code> if this is Windows 7.</p>
- *
- * <p>The field will return <code>false</code> if <code>OS_NAME</code> is
- * <code>null</code>.</p>
- *
+ * <p>
+ * Is <code>true</code> if this is Windows 7.
+ * </p>
+ *
+ * <p>
+ * The field will return <code>false</code> if <code>OS_NAME</code> is <code>null</code>.
+ * </p>
+ *
* @since 2.5
*/
- public static final boolean IS_OS_WINDOWS_7 = getOSMatches(OS_NAME_WINDOWS_PREFIX, "6.1");
+ public static final boolean IS_OS_WINDOWS_7 = getOSMatches(OS_NAME_WINDOWS_PREFIX, "6.1");
- //-----------------------------------------------------------------------
/**
- * <p>SystemUtils instances should NOT be constructed in standard
- * programming. Instead, the class should be used as
- * <code>SystemUtils.FILE_SEPARATOR</code>.</p>
- *
- * <p>This constructor is public to permit tools that require a JavaBean
- * instance to operate.</p>
+ * <p>
+ * Gets the Java home directory as a <code>File</code>.
+ * </p>
+ *
+ * @return a directory
+ * @throws SecurityException if a security manager exists and its
+ * <code>checkPropertyAccess</code> method doesn't allow access to the specified system property.
+ * @see System#getProperty(String)
+ * @since 2.1
*/
- public SystemUtils() {
- super();
+ public static File getJavaHome() {
+ return new File(System.getProperty(JAVA_HOME_KEY));
}
-
- //-----------------------------------------------------------------------
+
+ /**
+ * <p>
+ * Gets the Java IO temporary directory as a <code>File</code>.
+ * </p>
+ *
+ * @return a directory
+ * @throws SecurityException if a security manager exists and its
+ * <code>checkPropertyAccess</code> method doesn't allow access to the specified system
+ * property.
+ * @see System#getProperty(String)
+ * @since 2.1
+ */
+ public static File getJavaIoTmpDir() {
+ return new File(System.getProperty(JAVA_IO_TMPDIR_KEY));
+ }
+
/**
* <p>Gets the Java version number as a <code>float</code>.</p>
*
@@ -1133,64 +1400,64 @@ public class SystemUtils {
}
/**
- * <p>Gets the Java version number as a <code>float</code>.</p>
- *
- * <p>Example return values:</p>
+ * <p>
+ * Gets the Java version number as a <code>float</code>.
+ * </p>
+ *
+ * <p>
+ * Example return values:
+ * </p>
* <ul>
- * <li><code>1.2f</code> for JDK 1.2
- * <li><code>1.31f</code> for JDK 1.3.1
+ * <li><code>1.2f</code> for Java 1.2</li>
+ * <li><code>1.31f</code> for Java 1.3.1</li>
+ * <li><code>1.6f</code> for Java 1.6.0_20</li>
* </ul>
*
- * <p>Patch releases are not reported.
- * Zero is returned if {@link #JAVA_VERSION_TRIMMED} is <code>null</code>.</p>
+ * <p>
+ * Patch releases are not reported.
+ * </p>
*
- * @return the version, for example 1.31f for JDK 1.3.1
+ * @return the version, for example 1.31f for Java 1.3.1
*/
private static float getJavaVersionAsFloat() {
- if (JAVA_VERSION_TRIMMED == null) {
- return 0f;
- }
- String str = JAVA_VERSION_TRIMMED.substring(0, 3);
- if (JAVA_VERSION_TRIMMED.length() >= 5) {
- str = str + JAVA_VERSION_TRIMMED.substring(4, 5);
- }
- try {
- return Float.parseFloat(str);
- } catch (Exception ex) {
- return 0;
- }
+ return toVersionFloat(toJavaVersionIntArray(SystemUtils.JAVA_VERSION, JAVA_VERSION_TRIM_SIZE));
}
-
+
/**
- * <p>Gets the Java version number as an <code>int</code>.</p>
- *
- * <p>Example return values:</p>
+ * <p>
+ * Gets the Java version number as an <code>int</code>.
+ * </p>
+ *
+ * <p>
+ * Example return values:
+ * </p>
* <ul>
- * <li><code>120</code> for JDK 1.2
- * <li><code>131</code> for JDK 1.3.1
+ * <li><code>120</code> for Java 1.2</li>
+ * <li><code>131</code> for Java 1.3.1</li>
+ * <li><code>160</code> for Java 1.6.0_20</li>
* </ul>
*
- * <p>Patch releases are not reported.
- * Zero is returned if {@link #JAVA_VERSION_TRIMMED} is <code>null</code>.</p>
+ * <p>
+ * Patch releases are not reported.
+ * </p>
*
- * @return the version, for example 131 for JDK 1.3.1
+ * @return the version, for example 131 for Java 1.3.1
*/
private static int getJavaVersionAsInt() {
- if (JAVA_VERSION_TRIMMED == null) {
- return 0;
- }
- String str = JAVA_VERSION_TRIMMED.substring(0, 1);
- str = str + JAVA_VERSION_TRIMMED.substring(2, 3);
- if (JAVA_VERSION_TRIMMED.length() >= 5) {
- str = str + JAVA_VERSION_TRIMMED.substring(4, 5);
- } else {
- str = str + "0";
- }
- try {
- return Integer.parseInt(str);
- } catch (Exception ex) {
- return 0;
- }
+ return toVersionInt(toJavaVersionIntArray(SystemUtils.JAVA_VERSION, JAVA_VERSION_TRIM_SIZE));
+ }
+
+ /**
+ * <p>
+ * Decides if the Java version matches.
+ * </p>
+ *
+ * @param versionPrefix
+ * the prefix for the java version
+ * @return true if matches, or false if not or can't determine
+ */
+ private static boolean getJavaVersionMatches(String versionPrefix) {
+ return isJavaVersionMatch(JAVA_VERSION_TRIMMED, versionPrefix);
}
/**
@@ -1211,54 +1478,42 @@ public class SystemUtils {
}
/**
- * <p>Decides if the java version matches.</p>
+ * Decides if the operating system matches.
*
- * @param versionPrefix the prefix for the java version
+ * @param osNamePrefix
+ * the prefix for the os name
+ * @param osVersionPrefix
+ * the prefix for the version
* @return true if matches, or false if not or can't determine
*/
- private static boolean getJavaVersionMatches(String versionPrefix) {
- if (JAVA_VERSION_TRIMMED == null) {
- return false;
- }
- return JAVA_VERSION_TRIMMED.startsWith(versionPrefix);
- }
-
- /**
- * <p>Decides if the operating system matches.</p>
- *
- * @param osNamePrefix the prefix for the os name
- * @return true if matches, or false if not or can't determine
- */
- private static boolean getOSMatches(String osNamePrefix) {
- if (OS_NAME == null) {
- return false;
- }
- return OS_NAME.startsWith(osNamePrefix);
- }
+ private static boolean getOSMatches(String osNamePrefix, String osVersionPrefix) {
+ return isOSMatch(OS_NAME, OS_VERSION, osNamePrefix, osVersionPrefix);
+ }
/**
- * <p>Decides if the operating system matches.</p>
+ * Decides if the operating system matches.
*
- * @param osNamePrefix the prefix for the os name
- * @param osVersionPrefix the prefix for the version
+ * @param osNamePrefix
+ * the prefix for the os name
* @return true if matches, or false if not or can't determine
*/
- private static boolean getOSMatches(String osNamePrefix, String osVersionPrefix) {
- if (OS_NAME == null || OS_VERSION == null) {
- return false;
- }
- return OS_NAME.startsWith(osNamePrefix) && OS_VERSION.startsWith(osVersionPrefix);
- }
+ private static boolean getOSMatchesName(String osNamePrefix) {
+ return isOSNameMatch(OS_NAME, osNamePrefix);
+ }
- //-----------------------------------------------------------------------
+ // -----------------------------------------------------------------------
/**
- * <p>Gets a System property, defaulting to <code>null</code> if the property
- * cannot be read.</p>
- *
- * <p>If a <code>SecurityException</code> is caught, the return
- * value is <code>null</code> and a message is written to <code>System.err</code>.</p>
+ * <p>
+ * Gets a System property, defaulting to <code>null</code> if the property cannot be read.
+ * </p>
*
- * @param property the system property name
+ * <p>
+ * If a <code>SecurityException</code> is caught, the return value is <code>null</code> and a message is written to
+ * <code>System.err</code>.
+ * </p>
+ *
+ * @param property
+ * the system property name
* @return the system property value or <code>null</code> if a security problem occurs
*/
private static String getSystemProperty(String property) {
@@ -1266,43 +1521,92 @@ public class SystemUtils {
return System.getProperty(property);
} catch (SecurityException ex) {
// we are not allowed to look at this property
- System.err.println(
- "Caught a SecurityException reading the system property '" + property
- + "'; the SystemUtils property value will default to null."
- );
+ System.err.println("Caught a SecurityException reading the system property '" + property
+ + "'; the SystemUtils property value will default to null.");
return null;
}
}
-
+
/**
- * <p>Is the Java version at least the requested version.</p>
- *
- * <p>Example input:</p>
+ * <p>
+ * Gets the user directory as a <code>File</code>.
+ * </p>
+ *
+ * @return a directory
+ * @throws SecurityException if a security manager exists and its
+ * <code>checkPropertyAccess</code> method doesn't allow access to the specified system property.
+ * @see System#getProperty(String)
+ * @since 2.1
+ */
+ public static File getUserDir() {
+ return new File(System.getProperty(USER_DIR_KEY));
+ }
+
+ /**
+ * <p>
+ * Gets the user home directory as a <code>File</code>.
+ * </p>
+ *
+ * @return a directory
+ * @throws SecurityException if a security manager exists and its
+ * <code>checkPropertyAccess</code> method doesn't allow access to the specified system property.
+ * @see System#getProperty(String)
+ * @since 2.1
+ */
+ public static File getUserHome() {
+ return new File(System.getProperty(USER_HOME_KEY));
+ }
+
+ /**
+ * Returns whether the {@link #JAVA_AWT_HEADLESS} value is <code>true</code>.
+ *
+ * @return <code>true</code> if <code>JAVA_AWT_HEADLESS</code> is <code>"true"</code>, <code>false</code> otherwise.
+ *
+ * @see #JAVA_AWT_HEADLESS
+ * @since 2.1
+ * @since Java 1.4
+ */
+ public static boolean isJavaAwtHeadless() {
+ return JAVA_AWT_HEADLESS != null ? JAVA_AWT_HEADLESS.equals(Boolean.TRUE.toString()) : false;
+ }
+
+ /**
+ * <p>
+ * Is the Java version at least the requested version.
+ * </p>
+ *
+ * <p>
+ * Example input:
+ * </p>
* <ul>
- * <li><code>1.2f</code> to test for JDK 1.2</li>
- * <li><code>1.31f</code> to test for JDK 1.3.1</li>
+ * <li><code>1.2f</code> to test for Java 1.2</li>
+ * <li><code>1.31f</code> to test for Java 1.3.1</li>
* </ul>
*
- * @param requiredVersion the required version, for example 1.31f
- * @return <code>true</code> if the actual version is equal or greater
- * than the required version
+ * @param requiredVersion
+ * the required version, for example 1.31f
+ * @return <code>true</code> if the actual version is equal or greater than the required version
*/
public static boolean isJavaVersionAtLeast(float requiredVersion) {
return JAVA_VERSION_FLOAT >= requiredVersion;
}
-
+
/**
- * <p>Is the Java version at least the requested version.</p>
- *
- * <p>Example input:</p>
+ * <p>
+ * Is the Java version at least the requested version.
+ * </p>
+ *
+ * <p>
+ * Example input:
+ * </p>
* <ul>
- * <li><code>120</code> to test for JDK 1.2 or greater</li>
- * <li><code>131</code> to test for JDK 1.3.1 or greater</li>
+ * <li><code>120</code> to test for Java 1.2 or greater</li>
+ * <li><code>131</code> to test for Java 1.3.1 or greater</li>
* </ul>
*
- * @param requiredVersion the required version, for example 131
- * @return <code>true</code> if the actual version is equal or greater
- * than the required version
+ * @param requiredVersion
+ * the required version, for example 131
+ * @return <code>true</code> if the actual version is equal or greater than the required version
* @since 2.0
*/
public static boolean isJavaVersionAtLeast(int requiredVersion) {
@@ -1310,72 +1614,284 @@ public class SystemUtils {
}
/**
- * Returns whether the {@link #JAVA_AWT_HEADLESS} value is <code>true</code>.
- *
- * @return <code>true</code> if <code>JAVA_AWT_HEADLESS</code> is <code>"true"</code>,
- * <code>false</code> otherwise.
+ * <p>
+ * Decides if the Java version matches.
+ * </p>
+ * <p>
+ * This method is package private instead of private to support unit test invocation.
+ * </p>
*
- * @see #JAVA_AWT_HEADLESS
- * @since 2.1
- * @since Java 1.4
+ * @param version
+ * the actual Java version
+ * @param versionPrefix
+ * the prefix for the expected Java version
+ * @return true if matches, or false if not or can't determine
*/
- public static boolean isJavaAwtHeadless() {
- return JAVA_AWT_HEADLESS != null ? JAVA_AWT_HEADLESS.equals(Boolean.TRUE.toString()) : false;
+ static boolean isJavaVersionMatch(String version, String versionPrefix) {
+ if (version == null) {
+ return false;
+ }
+ return version.startsWith(versionPrefix);
}
+
/**
- * <p>Gets the Java home directory as a <code>File</code>.</p>
+ * Decides if the operating system matches.
+ * <p>
+ * This method is package private instead of private to support unit test invocation.
+ * </p>
*
- * @return a directory
- * @throws SecurityException if a security manager exists and its
- * <code>checkPropertyAccess</code> method doesn't allow
- * access to the specified system property.
- * @see System#getProperty(String)
- * @since 2.1
+ * @param osName
+ * the actual OS name
+ * @param osVersion
+ * the actual OS version
+ * @param osNamePrefix
+ * the prefix for the expected OS name
+ * @param osVersionPrefix
+ * the prefix for the expected OS version
+ * @return true if matches, or false if not or can't determine
*/
- public static File getJavaHome() {
- return new File(System.getProperty(JAVA_HOME_KEY));
+ static boolean isOSMatch(String osName, String osVersion, String osNamePrefix, String osVersionPrefix) {
+ if (osName == null || osVersion == null) {
+ return false;
+ }
+ return osName.startsWith(osNamePrefix) && osVersion.startsWith(osVersionPrefix);
}
/**
- * <p>Gets the Java IO temporary directory as a <code>File</code>.</p>
+ * Decides if the operating system matches.
+ * <p>
+ * This method is package private instead of private to support unit test invocation.
+ * </p>
*
- * @return a directory
- * @throws SecurityException if a security manager exists and its
- * <code>checkPropertyAccess</code> method doesn't allow
- * access to the specified system property.
- * @see System#getProperty(String)
- * @since 2.1
+ * @param osName
+ * the actual OS name
+ * @param osNamePrefix
+ * the prefix for the expected OS name
+ * @return true if matches, or false if not or can't determine
*/
- public static File getJavaIoTmpDir() {
- return new File(System.getProperty(JAVA_IO_TMPDIR_KEY));
+ static boolean isOSNameMatch(String osName, String osNamePrefix) {
+ if (osName == null) {
+ return false;
+ }
[... 241 lines stripped ...]