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Posted to issues@commons.apache.org by "Ed Pavlak (JIRA)" <ji...@apache.org> on 2018/07/30 18:36:01 UTC
[jira] [Closed] (BCEL-304) ClassPath.getClassFile() and friends do
not work with JDK 9 and higher
[ https://issues.apache.org/jira/browse/BCEL-304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ed Pavlak closed BCEL-304.
--------------------------
> ClassPath.getClassFile() and friends do not work with JDK 9 and higher
> ----------------------------------------------------------------------
>
> Key: BCEL-304
> URL: https://issues.apache.org/jira/browse/BCEL-304
> Project: Commons BCEL
> Issue Type: Bug
> Components: Main
> Affects Versions: 6.2
> Reporter: Ed Pavlak
> Assignee: Gary Gregory
> Priority: Major
> Fix For: 6.3
>
>
> When trying to get the class file for Java classes (ie. java.lang.String), an IOException is thrown:
> Exception in thread "main" java.io.IOException: Couldn't find: java.lang.String.class
> at org.apache.bcel.util.ClassPath.getClassFile(ClassPath.java:279)
> at org.apache.bcel.util.ClassPath.getClassFile(ClassPath.java:301)
> at bcel.test.GetClassFileTest.main(GetClassFileTest.java:12)
>
> The root cause appears to be the restructuring of Java starting with Java 9. Specifically, the removal of the rt.jar. The above excpetion can be reproduced using a simple application:
> package bcel.test;
> import java.io.IOException;
> import org.apache.bcel.util.ClassPath;
> public class GetClassFileTest {
> public static void main(String[] args) throws IOException {
> String className = "java.lang.String";
> System.out.println("Looking up ClassPath.ClassFile for: " + className);
> ClassPath.ClassFile classFile = ClassPath.SYSTEM_CLASS_PATH.getClassFile(className);
> if (classFile != null) {
> System.out.println("Class file base: " + classFile.getBase());
> System.out.println("Class file path: " + classFile.getPath());
> }
> }
> }
>
> Running this on Java 8 produces the following output, whereas running it on Java 9+ produces the IOException:
> Class file base: C:\jdk1.8.0_161\jre\lib\rt.jar
> Class file path: java/lang/String.class
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