[jira] [Created] (VFS-819) VFSClassLoader ClassNotFoundException JDK 17

["Mike Miller (Jira)" <ji...@apache.org>]

Mike Miller created VFS-819:
-------------------------------

             Summary: VFSClassLoader ClassNotFoundException JDK 17
                 Key: VFS-819
                 URL: https://issues.apache.org/jira/browse/VFS-819
             Project: Commons VFS
          Issue Type: Bug
         Environment: OpenJDK 17 version "17.0.3" 2022-04-19

Apache Maven 3.8.5

Multiple Linux
            Reporter: Mike Miller


We (Accumulo) are seeing the VFSClassLoader failing in JDK 17. We have very simple tests, that are all failing when trying to use it to load classes from the classpath.
{noformat}
[INFO] Running org.apache.accumulo.start.classloader.vfs.providers.VfsClassLoaderTest
[ERROR] Tests run: 2, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 26.367 s <<< FAILURE! - in org.apache.accumulo.start.classloader.vfs.providers.VfsClassLoaderTest
[ERROR] org.apache.accumulo.start.classloader.vfs.providers.VfsClassLoaderTest.testGetClass  Time elapsed: 0.02 s  <<< ERROR!
java.lang.ClassNotFoundException: test.HelloWorld
    at org.apache.commons.vfs2.impl.VFSClassLoader.findClass(VFSClassLoader.java:150)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:587)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
    at org.apache.accumulo.start.classloader.vfs.providers.VfsClassLoaderTest.testGetClass(VfsClassLoaderTest.java:66)
{noformat}
Here is an example:
{code:java}
this.cl = new VFSClassLoader(dirContents, vfs);

@Test
public void testGetClass() throws Exception {
  Class<?> helloWorldClass = this.cl.loadClass("test.HelloWorld");
  Object o = helloWorldClass.getDeclaredConstructor().newInstance();
  assertEquals("Hello World!", o.toString());
}{code}
https://github.com/apache/accumulo/blob/main/start/src/test/java/org/apache/accumulo/start/classloader/vfs/providers/VfsClassLoaderTest.java



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