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Posted to commits@commons.apache.org by gg...@apache.org on 2022/05/01 18:46:11 UTC

[commons-bcel] 08/08: Fix SpotBugs [ERROR] High: Found reliance on default encoding

This is an automated email from the ASF dual-hosted git repository.

ggregory pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/commons-bcel.git

commit 5a4b4fc17be8df08871649f87a16bdc8054f13ed
Author: Gary Gregory <ga...@gmail.com>
AuthorDate: Sun May 1 14:45:53 2022 -0400

    Fix SpotBugs [ERROR] High: Found reliance on default encoding
---
 .../java/org/apache/bcel/util/AttributeHTML.java   | 73 +++++++++++-----------
 src/main/java/org/apache/bcel/util/Class2HTML.java | 21 ++++---
 src/main/java/org/apache/bcel/util/CodeHTML.java   | 49 ++++++++-------
 .../java/org/apache/bcel/util/ConstantHTML.java    | 39 ++++++------
 src/main/java/org/apache/bcel/util/MethodHTML.java | 48 +++++++-------
 .../org/apache/bcel/util/Class2HTMLTestCase.java   |  3 +-
 6 files changed, 120 insertions(+), 113 deletions(-)

diff --git a/src/main/java/org/apache/bcel/util/AttributeHTML.java b/src/main/java/org/apache/bcel/util/AttributeHTML.java
index f44771ab..27728944 100644
--- a/src/main/java/org/apache/bcel/util/AttributeHTML.java
+++ b/src/main/java/org/apache/bcel/util/AttributeHTML.java
@@ -17,9 +17,9 @@
  */
 package org.apache.bcel.util;
 
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.nio.charset.Charset;
 
 import org.apache.bcel.Const;
 import org.apache.bcel.classfile.Attribute;
@@ -40,31 +40,32 @@ import org.apache.bcel.classfile.Utility;
 
 /**
  * Convert found attributes into HTML file.
- *
- *
  */
 final class AttributeHTML {
 
     private final String class_name; // name of current class
-    private final PrintWriter file; // file to write to
+    private final PrintWriter printWriter; // file to write to
     private int attr_count;
     private final ConstantHTML constant_html;
     private final ConstantPool constant_pool;
 
 
     AttributeHTML(final String dir, final String class_name, final ConstantPool constant_pool,
-            final ConstantHTML constant_html) throws IOException {
+        final ConstantHTML constant_html, final Charset charset) throws IOException {
         this.class_name = class_name;
         this.constant_pool = constant_pool;
         this.constant_html = constant_html;
-        file = new PrintWriter(new FileOutputStream(dir + class_name + "_attributes.html"));
-        file.println("<HTML><BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");
+        printWriter = new PrintWriter(dir + class_name + "_attributes.html", charset.name());
+        printWriter.print("<HTML><head><meta charset=\"");
+        printWriter.print(charset.name());
+        printWriter.println("\"></head>");
+        printWriter.println("<BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");
     }
 
 
     void close() {
-        file.println("</TABLE></BODY></HTML>");
-        file.close();
+        printWriter.println("</TABLE></BODY></HTML>");
+        printWriter.close();
     }
 
 
@@ -87,11 +88,11 @@ final class AttributeHTML {
         }
         attr_count++; // Increment number of attributes found so far
         if (attr_count % 2 == 0) {
-            file.print("<TR BGCOLOR=\"#C0C0C0\"><TD>");
+            printWriter.print("<TR BGCOLOR=\"#C0C0C0\"><TD>");
         } else {
-            file.print("<TR BGCOLOR=\"#A0A0A0\"><TD>");
+            printWriter.print("<TR BGCOLOR=\"#A0A0A0\"><TD>");
         }
-        file.println("<H4><A NAME=\"" + anchor + "\">" + attr_count + " " + Const.getAttributeName(tag)
+        printWriter.println("<H4><A NAME=\"" + anchor + "\">" + attr_count + " " + Const.getAttributeName(tag)
                 + "</A></H4>");
         /* Handle different attributes
          */
@@ -99,7 +100,7 @@ final class AttributeHTML {
             case Const.ATTR_CODE:
                 final Code c = (Code) attribute;
                 // Some directly printable values
-                file.print("<UL><LI>Maximum stack size = " + c.getMaxStack()
+                printWriter.print("<UL><LI>Maximum stack size = " + c.getMaxStack()
                         + "</LI>\n<LI>Number of local variables = " + c.getMaxLocals()
                         + "</LI>\n<LI><A HREF=\"" + class_name + "_code.html#method"
                         + method_number + "\" TARGET=Code>Byte code</A></LI></UL>\n");
@@ -107,63 +108,63 @@ final class AttributeHTML {
                 final CodeException[] ce = c.getExceptionTable();
                 final int len = ce.length;
                 if (len > 0) {
-                    file.print("<P><B>Exceptions handled</B><UL>");
+                    printWriter.print("<P><B>Exceptions handled</B><UL>");
                     for (final CodeException cex : ce) {
                         final int catch_type = cex.getCatchType(); // Index in constant pool
-                        file.print("<LI>");
+                        printWriter.print("<LI>");
                         if (catch_type != 0) {
-                            file.print(constant_html.referenceConstant(catch_type)); // Create Link to _cp.html
+                            printWriter.print(constant_html.referenceConstant(catch_type)); // Create Link to _cp.html
                         } else {
-                            file.print("Any Exception");
+                            printWriter.print("Any Exception");
                         }
-                        file.print("<BR>(Ranging from lines "
+                        printWriter.print("<BR>(Ranging from lines "
                                 + codeLink(cex.getStartPC(), method_number) + " to "
                                 + codeLink(cex.getEndPC(), method_number) + ", handled at line "
                                 + codeLink(cex.getHandlerPC(), method_number) + ")</LI>");
                     }
-                    file.print("</UL>");
+                    printWriter.print("</UL>");
                 }
                 break;
             case Const.ATTR_CONSTANT_VALUE:
                 index = ((ConstantValue) attribute).getConstantValueIndex();
                 // Reference _cp.html
-                file.print("<UL><LI><A HREF=\"" + class_name + "_cp.html#cp" + index
+                printWriter.print("<UL><LI><A HREF=\"" + class_name + "_cp.html#cp" + index
                         + "\" TARGET=\"ConstantPool\">Constant value index(" + index
                         + ")</A></UL>\n");
                 break;
             case Const.ATTR_SOURCE_FILE:
                 index = ((SourceFile) attribute).getSourceFileIndex();
                 // Reference _cp.html
-                file.print("<UL><LI><A HREF=\"" + class_name + "_cp.html#cp" + index
+                printWriter.print("<UL><LI><A HREF=\"" + class_name + "_cp.html#cp" + index
                         + "\" TARGET=\"ConstantPool\">Source file index(" + index + ")</A></UL>\n");
                 break;
             case Const.ATTR_EXCEPTIONS:
                 // List thrown exceptions
                 final int[] indices = ((ExceptionTable) attribute).getExceptionIndexTable();
-                file.print("<UL>");
+                printWriter.print("<UL>");
                 for (final int indice : indices) {
-                    file.print("<LI><A HREF=\"" + class_name + "_cp.html#cp" + indice
+                    printWriter.print("<LI><A HREF=\"" + class_name + "_cp.html#cp" + indice
                             + "\" TARGET=\"ConstantPool\">Exception class index(" + indice
                             + ")</A>\n");
                 }
-                file.print("</UL>\n");
+                printWriter.print("</UL>\n");
                 break;
             case Const.ATTR_LINE_NUMBER_TABLE:
                 final LineNumber[] line_numbers = ((LineNumberTable) attribute).getLineNumberTable();
                 // List line number pairs
-                file.print("<P>");
+                printWriter.print("<P>");
                 for (int i = 0; i < line_numbers.length; i++) {
-                    file.print("(" + line_numbers[i].getStartPC() + ",&nbsp;"
+                    printWriter.print("(" + line_numbers[i].getStartPC() + ",&nbsp;"
                             + line_numbers[i].getLineNumber() + ")");
                     if (i < line_numbers.length - 1) {
-                        file.print(", "); // breakable
+                        printWriter.print(", "); // breakable
                     }
                 }
                 break;
             case Const.ATTR_LOCAL_VARIABLE_TABLE:
                 final LocalVariable[] vars = ((LocalVariableTable) attribute).getLocalVariableTable();
                 // List name, range and type
-                file.print("<UL>");
+                printWriter.print("<UL>");
                 for (final LocalVariable var : vars) {
                     index = var.getSignatureIndex();
                     String signature = ((ConstantUtf8) constant_pool.getConstant(index,
@@ -171,19 +172,19 @@ final class AttributeHTML {
                     signature = Utility.signatureToString(signature, false);
                     final int start = var.getStartPC();
                     final int end = start + var.getLength();
-                    file.println("<LI>" + Class2HTML.referenceType(signature) + "&nbsp;<B>"
+                    printWriter.println("<LI>" + Class2HTML.referenceType(signature) + "&nbsp;<B>"
                             + var.getName() + "</B> in slot %" + var.getIndex()
                             + "<BR>Valid from lines " + "<A HREF=\"" + class_name
                             + "_code.html#code" + method_number + "@" + start + "\" TARGET=Code>"
                             + start + "</A> to " + "<A HREF=\"" + class_name + "_code.html#code"
                             + method_number + "@" + end + "\" TARGET=Code>" + end + "</A></LI>");
                 }
-                file.print("</UL>\n");
+                printWriter.print("</UL>\n");
                 break;
             case Const.ATTR_INNER_CLASSES:
                 final InnerClass[] classes = ((InnerClasses) attribute).getInnerClasses();
                 // List inner classes
-                file.print("<UL>");
+                printWriter.print("<UL>");
                 for (final InnerClass classe : classes) {
                     final String name;
                     final String access;
@@ -195,18 +196,18 @@ final class AttributeHTML {
                         name = "&lt;anonymous&gt;";
                     }
                     access = Utility.accessToString(classe.getInnerAccessFlags());
-                    file.print("<LI><FONT COLOR=\"#FF0000\">" + access + "</FONT> "
+                    printWriter.print("<LI><FONT COLOR=\"#FF0000\">" + access + "</FONT> "
                             + constant_html.referenceConstant(classe.getInnerClassIndex())
                             + " in&nbsp;class "
                             + constant_html.referenceConstant(classe.getOuterClassIndex())
                             + " named " + name + "</LI>\n");
                 }
-                file.print("</UL>\n");
+                printWriter.print("</UL>\n");
                 break;
             default: // Such as Unknown attribute or Deprecated
-                file.print("<P>" + attribute);
+                printWriter.print("<P>" + attribute);
         }
-        file.println("</TD></TR>");
-        file.flush();
+        printWriter.println("</TD></TR>");
+        printWriter.flush();
     }
 }
diff --git a/src/main/java/org/apache/bcel/util/Class2HTML.java b/src/main/java/org/apache/bcel/util/Class2HTML.java
index ef56ab14..c987ae89 100644
--- a/src/main/java/org/apache/bcel/util/Class2HTML.java
+++ b/src/main/java/org/apache/bcel/util/Class2HTML.java
@@ -21,6 +21,8 @@ import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.HashSet;
 import java.util.Set;
 
@@ -186,6 +188,10 @@ public class Class2HTML implements Constants {
      * @param dir The directory to put the files in
      */
     public Class2HTML(final JavaClass javaClass, final String dir) throws IOException {
+        this(javaClass, dir, StandardCharsets.UTF_8);
+    }
+
+    private Class2HTML(final JavaClass javaClass, final String dir, final Charset charset) throws IOException {
         final Method[] methods = javaClass.getMethods();
         this.javaClass = javaClass;
         this.dir = dir;
@@ -198,18 +204,15 @@ public class Class2HTML implements Constants {
         } else {
             classPackage = ""; // default package
         }
-        final ConstantHTML constantHtml = new ConstantHTML(dir, className, classPackage, methods,
-                constantPool);
-        /* Attributes can't be written in one step, so we just open a file
-         * which will be written consequently.
+        final ConstantHTML constantHtml = new ConstantHTML(dir, className, classPackage, methods, constantPool, charset);
+        /*
+         * Attributes can't be written in one step, so we just open a file which will be written consequently.
          */
-        final AttributeHTML attributeHtml = new AttributeHTML(dir, className, constantPool,
-                constantHtml);
-        new MethodHTML(dir, className, methods, javaClass.getFields(),
-                constantHtml, attributeHtml);
+        final AttributeHTML attributeHtml = new AttributeHTML(dir, className, constantPool, constantHtml, charset);
+        new MethodHTML(dir, className, methods, javaClass.getFields(), constantHtml, attributeHtml, charset);
         // Write main file (with frames, yuk)
         writeMainHTML(attributeHtml);
-        new CodeHTML(dir, className, methods, constantPool, constantHtml);
+        new CodeHTML(dir, className, methods, constantPool, constantHtml, charset);
         attributeHtml.close();
     }
 
diff --git a/src/main/java/org/apache/bcel/util/CodeHTML.java b/src/main/java/org/apache/bcel/util/CodeHTML.java
index 543af9a0..4519699a 100644
--- a/src/main/java/org/apache/bcel/util/CodeHTML.java
+++ b/src/main/java/org/apache/bcel/util/CodeHTML.java
@@ -17,9 +17,9 @@
  */
 package org.apache.bcel.util;
 
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.nio.charset.Charset;
 import java.util.BitSet;
 
 import org.apache.bcel.Const;
@@ -39,33 +39,34 @@ import org.apache.bcel.classfile.Utility;
 
 /**
  * Convert code into HTML file.
- *
- *
  */
 final class CodeHTML {
 
     private static boolean wide;
 private final String className; // name of current class
     //    private Method[] methods; // Methods to print
-    private final PrintWriter file; // file to write to
+    private final PrintWriter printWriter; // file to write to
     private BitSet gotoSet;
     private final ConstantPool constantPool;
     private final ConstantHTML constantHtml;
 
 
     CodeHTML(final String dir, final String class_name, final Method[] methods, final ConstantPool constant_pool,
-            final ConstantHTML constant_html) throws IOException {
+            final ConstantHTML constant_html, final Charset charset) throws IOException {
         this.className = class_name;
 //        this.methods = methods;
         this.constantPool = constant_pool;
         this.constantHtml = constant_html;
-        file = new PrintWriter(new FileOutputStream(dir + class_name + "_code.html"));
-        file.println("<HTML><BODY BGCOLOR=\"#C0C0C0\">");
+        printWriter = new PrintWriter(dir + class_name + "_code.html", charset.name());
+        printWriter.print("<HTML><head><meta charset=\"");
+        printWriter.print(charset.name());
+        printWriter.println("\"></head>");
+        printWriter.println("<BODY BGCOLOR=\"#C0C0C0\">");
         for (int i = 0; i < methods.length; i++) {
             writeMethod(methods[i], i);
         }
-        file.println("</BODY></HTML>");
-        file.close();
+        printWriter.println("</BODY></HTML>");
+        printWriter.close();
     }
 
 
@@ -505,45 +506,45 @@ private final String className; // name of current class
         access = Utility.replace(access, " ", "&nbsp;");
         // Get the method's attributes, the Code Attribute in particular
         final Attribute[] attributes = method.getAttributes();
-        file.print("<P><B><FONT COLOR=\"#FF0000\">" + access + "</FONT>&nbsp;" + "<A NAME=method"
+        printWriter.print("<P><B><FONT COLOR=\"#FF0000\">" + access + "</FONT>&nbsp;" + "<A NAME=method"
                 + method_number + ">" + Class2HTML.referenceType(type) + "</A>&nbsp<A HREF=\""
                 + className + "_methods.html#method" + method_number + "\" TARGET=Methods>"
                 + html_name + "</A>(");
         for (int i = 0; i < args.length; i++) {
-            file.print(Class2HTML.referenceType(args[i]));
+            printWriter.print(Class2HTML.referenceType(args[i]));
             if (i < args.length - 1) {
-                file.print(",&nbsp;");
+                printWriter.print(",&nbsp;");
             }
         }
-        file.println(")</B></P>");
+        printWriter.println(")</B></P>");
         Code c = null;
         byte[] code = null;
         if (attributes.length > 0) {
-            file.print("<H4>Attributes</H4><UL>\n");
+            printWriter.print("<H4>Attributes</H4><UL>\n");
             for (int i = 0; i < attributes.length; i++) {
                 byte tag = attributes[i].getTag();
                 if (tag != Const.ATTR_UNKNOWN) {
-                    file.print("<LI><A HREF=\"" + className + "_attributes.html#method"
+                    printWriter.print("<LI><A HREF=\"" + className + "_attributes.html#method"
                             + method_number + "@" + i + "\" TARGET=Attributes>"
                             + Const.getAttributeName(tag) + "</A></LI>\n");
                 } else {
-                    file.print("<LI>" + attributes[i] + "</LI>");
+                    printWriter.print("<LI>" + attributes[i] + "</LI>");
                 }
                 if (tag == Const.ATTR_CODE) {
                     c = (Code) attributes[i];
                     final Attribute[] attributes2 = c.getAttributes();
                     code = c.getCode();
-                    file.print("<UL>");
+                    printWriter.print("<UL>");
                     for (int j = 0; j < attributes2.length; j++) {
                         tag = attributes2[j].getTag();
-                        file.print("<LI><A HREF=\"" + className + "_attributes.html#" + "method"
+                        printWriter.print("<LI><A HREF=\"" + className + "_attributes.html#" + "method"
                                 + method_number + "@" + i + "@" + j + "\" TARGET=Attributes>"
                                 + Const.getAttributeName(tag) + "</A></LI>\n");
                     }
-                    file.print("</UL>");
+                    printWriter.print("</UL>");
                 }
             }
-            file.println("</UL>");
+            printWriter.println("</UL>");
         }
         if (code != null) { // No code, an abstract method, e.g.
             //System.out.println(name + "\n" + Utility.codeToString(code, constantPool, 0, -1));
@@ -552,7 +553,7 @@ private final String className; // name of current class
                 stream.mark(stream.available());
                 findGotos(stream, c);
                 stream.reset();
-                file.println("<TABLE BORDER=0><TR><TH ALIGN=LEFT>Byte<BR>offset</TH>"
+                printWriter.println("<TABLE BORDER=0><TR><TH ALIGN=LEFT>Byte<BR>offset</TH>"
                         + "<TH ALIGN=LEFT>Instruction</TH><TH ALIGN=LEFT>Argument</TH>");
                 for (; stream.available() > 0;) {
                     final int offset = stream.getIndex();
@@ -571,12 +572,12 @@ private final String className; // name of current class
                     } else {
                         anchor2 = "" + offset;
                     }
-                    file.println("<TR VALIGN=TOP><TD>" + anchor2 + "</TD><TD>" + anchor + str + "</TR>");
+                    printWriter.println("<TR VALIGN=TOP><TD>" + anchor2 + "</TD><TD>" + anchor + str + "</TR>");
                 }
             }
             // Mark last line, may be targetted from Attributes window
-            file.println("<TR><TD> </A></TD></TR>");
-            file.println("</TABLE>");
+            printWriter.println("<TR><TD> </A></TD></TR>");
+            printWriter.println("</TABLE>");
         }
     }
 }
diff --git a/src/main/java/org/apache/bcel/util/ConstantHTML.java b/src/main/java/org/apache/bcel/util/ConstantHTML.java
index 5bfaa8da..bc1f9f3b 100644
--- a/src/main/java/org/apache/bcel/util/ConstantHTML.java
+++ b/src/main/java/org/apache/bcel/util/ConstantHTML.java
@@ -17,9 +17,9 @@
  */
 package org.apache.bcel.util;
 
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.nio.charset.Charset;
 
 import org.apache.bcel.Const;
 import org.apache.bcel.classfile.Constant;
@@ -35,45 +35,46 @@ import org.apache.bcel.classfile.Utility;
 
 /**
  * Convert constant pool into HTML file.
- *
- *
  */
 final class ConstantHTML {
 
     private final String className; // name of current class
     private final String classPackage; // name of package
     private final ConstantPool constantPool; // reference to constant pool
-    private final PrintWriter file; // file to write to
+    private final PrintWriter printWriter; // file to write to
     private final String[] constantRef; // String to return for cp[i]
     private final Constant[] constants; // The constants in the cp
     private final Method[] methods;
 
 
     ConstantHTML(final String dir, final String class_name, final String class_package, final Method[] methods,
-            final ConstantPool constant_pool) throws IOException {
+        final ConstantPool constant_pool, final Charset charset) throws IOException {
         this.className = class_name;
         this.classPackage = class_package;
         this.constantPool = constant_pool;
         this.methods = methods;
         constants = constant_pool.getConstantPool();
-        file = new PrintWriter(new FileOutputStream(dir + class_name + "_cp.html"));
+        printWriter = new PrintWriter(dir + class_name + "_cp.html", charset.name());
         constantRef = new String[constants.length];
         constantRef[0] = "&lt;unknown&gt;";
-        file.println("<HTML><BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");
+        printWriter.print("<HTML><head><meta charset=\"");
+        printWriter.print(charset.name());
+        printWriter.println("\"></head>");
+        printWriter.println("<BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");
         // Loop through constants, constants[0] is reserved
         for (int i = 1; i < constants.length; i++) {
             if (i % 2 == 0) {
-                file.print("<TR BGCOLOR=\"#C0C0C0\"><TD>");
+                printWriter.print("<TR BGCOLOR=\"#C0C0C0\"><TD>");
             } else {
-                file.print("<TR BGCOLOR=\"#A0A0A0\"><TD>");
+                printWriter.print("<TR BGCOLOR=\"#A0A0A0\"><TD>");
             }
             if (constants[i] != null) {
                 writeConstant(i);
             }
-            file.print("</TD></TR>\n");
+            printWriter.print("</TD></TR>\n");
         }
-        file.println("</TABLE></BODY></HTML>");
-        file.close();
+        printWriter.println("</TABLE></BODY></HTML>");
+        printWriter.close();
     }
 
 
@@ -99,7 +100,7 @@ final class ConstantHTML {
         int name_index;
         String ref;
         // The header is always the same
-        file.println("<H4> <A NAME=cp" + index + ">" + index + "</A> " + Const.getConstantName(tag)
+        printWriter.println("<H4> <A NAME=cp" + index + ">" + index + "</A> " + Const.getConstantName(tag)
                 + "</H4>");
         /* For every constant type get the needed parameters and print them appropiately
          */
@@ -158,7 +159,7 @@ final class ConstantHTML {
                         + class_index + "\" TARGET=Constants>" + short_method_class
                         + "</A>.<A HREF=\"" + className + "_cp.html#cp" + index
                         + "\" TARGET=ConstantPool>" + html_method_name + "</A>&nbsp;" + arg_types;
-                file.println("<P><TT>" + ret_type + "&nbsp;" + ref + arg_types
+                printWriter.println("<P><TT>" + ret_type + "&nbsp;" + ref + arg_types
                         + "&nbsp;</TT>\n<UL>" + "<LI><A HREF=\"#cp" + class_index
                         + "\">Class index(" + class_index + ")</A>\n" + "<LI><A HREF=\"#cp"
                         + name_index + "\">NameAndType index(" + name_index + ")</A></UL>");
@@ -187,7 +188,7 @@ final class ConstantHTML {
                         + "\" TARGET=Constants>" + short_field_class + "</A>.<A HREF=\""
                         + className + "_cp.html#cp" + index + "\" TARGET=ConstantPool>"
                         + field_name + "</A>";
-                file.println("<P><TT>" + ref + "</TT><BR>\n" + "<UL>" + "<LI><A HREF=\"#cp"
+                printWriter.println("<P><TT>" + ref + "</TT><BR>\n" + "<UL>" + "<LI><A HREF=\"#cp"
                         + class_index + "\">Class(" + class_index + ")</A><BR>\n"
                         + "<LI><A HREF=\"#cp" + name_index + "\">NameAndType(" + name_index
                         + ")</A></UL>");
@@ -203,7 +204,7 @@ final class ConstantHTML {
                         + "</A>";
                 constantRef[index] = "<A HREF=\"" + className + "_cp.html#cp" + index
                         + "\" TARGET=ConstantPool>" + short_class_name + "</A>";
-                file.println("<P><TT>" + ref + "</TT><UL>" + "<LI><A HREF=\"#cp" + name_index
+                printWriter.println("<P><TT>" + ref + "</TT><UL>" + "<LI><A HREF=\"#cp" + name_index
                         + "\">Name index(" + name_index + ")</A></UL>\n");
                 break;
             case Const.CONSTANT_String:
@@ -211,7 +212,7 @@ final class ConstantHTML {
                         Const.CONSTANT_String);
                 name_index = c5.getStringIndex();
                 final String str = Class2HTML.toHTML(constantPool.constantToString(index, tag));
-                file.println("<P><TT>" + str + "</TT><UL>" + "<LI><A HREF=\"#cp" + name_index
+                printWriter.println("<P><TT>" + str + "</TT><UL>" + "<LI><A HREF=\"#cp" + name_index
                         + "\">Name index(" + name_index + ")</A></UL>\n");
                 break;
             case Const.CONSTANT_NameAndType:
@@ -219,14 +220,14 @@ final class ConstantHTML {
                         Const.CONSTANT_NameAndType);
                 name_index = c6.getNameIndex();
                 final int signature_index = c6.getSignatureIndex();
-                file.println("<P><TT>"
+                printWriter.println("<P><TT>"
                         + Class2HTML.toHTML(constantPool.constantToString(index, tag))
                         + "</TT><UL>" + "<LI><A HREF=\"#cp" + name_index + "\">Name index("
                         + name_index + ")</A>\n" + "<LI><A HREF=\"#cp" + signature_index
                         + "\">Signature index(" + signature_index + ")</A></UL>\n");
                 break;
             default:
-                file.println("<P><TT>" + Class2HTML.toHTML(constantPool.constantToString(index, tag)) + "</TT>\n");
+                printWriter.println("<P><TT>" + Class2HTML.toHTML(constantPool.constantToString(index, tag)) + "</TT>\n");
         } // switch
     }
 }
diff --git a/src/main/java/org/apache/bcel/util/MethodHTML.java b/src/main/java/org/apache/bcel/util/MethodHTML.java
index b83220a2..f85f7ece 100644
--- a/src/main/java/org/apache/bcel/util/MethodHTML.java
+++ b/src/main/java/org/apache/bcel/util/MethodHTML.java
@@ -20,6 +20,7 @@ package org.apache.bcel.util;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.nio.charset.Charset;
 
 import org.apache.bcel.Const;
 import org.apache.bcel.classfile.Attribute;
@@ -31,38 +32,39 @@ import org.apache.bcel.classfile.Utility;
 
 /**
  * Convert methods and fields into HTML file.
- *
- *
  */
 final class MethodHTML {
 
     private final String className; // name of current class
-    private final PrintWriter file; // file to write to
+    private final PrintWriter printWriter; // file to write to
     private final ConstantHTML constantHtml;
     private final AttributeHTML attribute_html;
 
 
     MethodHTML(final String dir, final String class_name, final Method[] methods, final Field[] fields,
-            final ConstantHTML constant_html, final AttributeHTML attribute_html) throws IOException {
+            final ConstantHTML constant_html, final AttributeHTML attribute_html, final Charset charset) throws IOException {
         this.className = class_name;
         this.attribute_html = attribute_html;
         this.constantHtml = constant_html;
-        file = new PrintWriter(new FileOutputStream(dir + class_name + "_methods.html"));
-        file.println("<HTML><BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");
-        file.println("<TR><TH ALIGN=LEFT>Access&nbsp;flags</TH><TH ALIGN=LEFT>Type</TH>"
+        printWriter = new PrintWriter(new FileOutputStream(dir + class_name + "_methods.html"));
+        printWriter.print("<HTML><head><meta charset=\"");
+        printWriter.print(charset.name());
+        printWriter.println("\"></head>");
+        printWriter.println("<BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");
+        printWriter.println("<TR><TH ALIGN=LEFT>Access&nbsp;flags</TH><TH ALIGN=LEFT>Type</TH>"
                 + "<TH ALIGN=LEFT>Field&nbsp;name</TH></TR>");
         for (final Field field : fields) {
             writeField(field);
         }
-        file.println("</TABLE>");
-        file.println("<TABLE BORDER=0><TR><TH ALIGN=LEFT>Access&nbsp;flags</TH>"
+        printWriter.println("</TABLE>");
+        printWriter.println("<TABLE BORDER=0><TR><TH ALIGN=LEFT>Access&nbsp;flags</TH>"
                 + "<TH ALIGN=LEFT>Return&nbsp;type</TH><TH ALIGN=LEFT>Method&nbsp;name</TH>"
                 + "<TH ALIGN=LEFT>Arguments</TH></TR>");
         for (int i = 0; i < methods.length; i++) {
             writeMethod(methods[i], i);
         }
-        file.println("</TABLE></BODY></HTML>");
-        file.close();
+        printWriter.println("</TABLE></BODY></HTML>");
+        printWriter.close();
     }
 
 
@@ -77,7 +79,7 @@ final class MethodHTML {
         String access = Utility.accessToString(field.getAccessFlags());
         Attribute[] attributes;
         access = Utility.replace(access, " ", "&nbsp;");
-        file.print("<TR><TD><FONT COLOR=\"#FF0000\">" + access + "</FONT></TD>\n<TD>"
+        printWriter.print("<TR><TD><FONT COLOR=\"#FF0000\">" + access + "</FONT></TD>\n<TD>"
                 + Class2HTML.referenceType(type) + "</TD><TD><A NAME=\"field" + name + "\">" + name
                 + "</A></TD>");
         attributes = field.getAttributes();
@@ -89,12 +91,12 @@ final class MethodHTML {
             if (attributes[i].getTag() == Const.ATTR_CONSTANT_VALUE) { // Default value
                 final String str = attributes[i].toString();
                 // Reference attribute in _attributes.html
-                file.print("<TD>= <A HREF=\"" + className + "_attributes.html#" + name + "@" + i
+                printWriter.print("<TD>= <A HREF=\"" + className + "_attributes.html#" + name + "@" + i
                         + "\" TARGET=\"Attributes\">" + str + "</TD>\n");
                 break;
             }
         }
-        file.println("</TR>");
+        printWriter.println("</TR>");
     }
 
 
@@ -117,33 +119,33 @@ final class MethodHTML {
          */
         access = Utility.replace(access, " ", "&nbsp;");
         html_name = Class2HTML.toHTML(name);
-        file.print("<TR VALIGN=TOP><TD><FONT COLOR=\"#FF0000\"><A NAME=method" + method_number
+        printWriter.print("<TR VALIGN=TOP><TD><FONT COLOR=\"#FF0000\"><A NAME=method" + method_number
                 + ">" + access + "</A></FONT></TD>");
-        file.print("<TD>" + Class2HTML.referenceType(type) + "</TD><TD>" + "<A HREF=" + className
+        printWriter.print("<TD>" + Class2HTML.referenceType(type) + "</TD><TD>" + "<A HREF=" + className
                 + "_code.html#method" + method_number + " TARGET=Code>" + html_name
                 + "</A></TD>\n<TD>(");
         for (int i = 0; i < args.length; i++) {
-            file.print(Class2HTML.referenceType(args[i]));
+            printWriter.print(Class2HTML.referenceType(args[i]));
             if (i < args.length - 1) {
-                file.print(", ");
+                printWriter.print(", ");
             }
         }
-        file.print(")</TD></TR>");
+        printWriter.print(")</TD></TR>");
         // Check for thrown exceptions
         for (int i = 0; i < attributes.length; i++) {
             attribute_html.writeAttribute(attributes[i], "method" + method_number + "@" + i,
                     method_number);
             final byte tag = attributes[i].getTag();
             if (tag == Const.ATTR_EXCEPTIONS) {
-                file.print("<TR VALIGN=TOP><TD COLSPAN=2></TD><TH ALIGN=LEFT>throws</TH><TD>");
+                printWriter.print("<TR VALIGN=TOP><TD COLSPAN=2></TD><TH ALIGN=LEFT>throws</TH><TD>");
                 final int[] exceptions = ((ExceptionTable) attributes[i]).getExceptionIndexTable();
                 for (int j = 0; j < exceptions.length; j++) {
-                    file.print(constantHtml.referenceConstant(exceptions[j]));
+                    printWriter.print(constantHtml.referenceConstant(exceptions[j]));
                     if (j < exceptions.length - 1) {
-                        file.print(", ");
+                        printWriter.print(", ");
                     }
                 }
-                file.println("</TD></TR>");
+                printWriter.println("</TD></TR>");
             } else if (tag == Const.ATTR_CODE) {
                 final Attribute[] c_a = ((Code) attributes[i]).getAttributes();
                 for (int j = 0; j < c_a.length; j++) {
diff --git a/src/test/java/org/apache/bcel/util/Class2HTMLTestCase.java b/src/test/java/org/apache/bcel/util/Class2HTMLTestCase.java
index 971e91d2..4a9e68fd 100644
--- a/src/test/java/org/apache/bcel/util/Class2HTMLTestCase.java
+++ b/src/test/java/org/apache/bcel/util/Class2HTMLTestCase.java
@@ -48,8 +48,7 @@ public class Class2HTMLTestCase {
     @Test
     public void testReferenceToConstant() {
         @SuppressWarnings("unused")
-        final
-        short referenceToConstant = Class2HTML.AALOAD;
+        final short referenceToConstant = Class2HTML.AALOAD;
     }
 
 }