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https://issues.apache.org/jira/browse/BCEL-304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16560235#comment-16560235
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ASF GitHub Bot commented on BCEL-304:
-------------------------------------
GitHub user epavlak opened a pull request:
https://github.com/apache/commons-bcel/pull/22
[BCEL-304] Include Java 9+ modules in path used by ClassPath.java
With the restructuring of Java .class files in Java 9 and higher to be in
modules instead of the rt.jar, the ClassPath.getClassFile method would fail to
find Java class files (ex: String.class). These modifications include the Java
9+ modules in the path used by ClassPath.java so that the .class files can be
located.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/epavlak/commons-bcel BCEL-304
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/commons-bcel/pull/22.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #22
----
commit e331171f168ab335b9756294406e85d9995731bd
Author: epavlak <epavlak@...>
Date: 2018-07-27T19:50:30Z
[BCEL-304] Include Java 9+ modules in path used by ClassPath.java
commit 98157fb61a547d8d4fe40826d1f863a1c1f1c374
Author: epavlak <epavlak@...>
Date: 2018-07-27T19:53:58Z
[BCEL-304] Include Java 9+ modules in path used by ClassPath.java
commit d5a73b6987eb262d90f809e3a2b77845fcce95d2
Author: epavlak <epavlak@...>
Date: 2018-07-27T19:56:57Z
[BCEL-304] Include Java 9+ modules in path used by ClassPath.java
----
> ClassPath.getClassFile does not work with Java 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
> Priority: Major
>
> 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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