[Sablevm-bugs] [ sablevm-Bugs-723743 ] loadClass fails on custom class loader

[SourceForge.net <no...@so...>]

Bugs item #723743, was opened at 2003-04-18 12:24
Message generated for change (Comment added) made by davidbelanger
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105523&aid=723743&group_id=5523

Category: Execution Problem
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Daniel Bonniot (bonniot)
Assigned to: Nobody/Anonymous (nobody)
Summary: loadClass fails on custom class loader

Initial Comment:
When I try to load a class from a custom
URLClassLoader, it fails with a null pointer exception.
Note that this only happens if the class is not on the
main classpath.

$ cat Test.java 
import java.net.URL;
import java.io.File;

class Test
{
  public static void main(String[] args)
  {
    try {
      ClassLoader loader = new java.net.URLClassLoader
        (new URL[]{ new
File("/tmp").getCanonicalFile().toURL() });
      Class c = loader.loadClass(args[0]);
      System.out.println(c);
    }
    catch (Throwable t) {
      t.printStackTrace();
    }
  }
}
$ cat Simple.java    
public class Simple {}
$ javac Simple.java 
$ mv Simple.class /tmp/
$ sablevm Test Simple

SableVM version 1.0.8
Copyright (C) 2000-2002 Etienne M. Gagnon
<eti...@uq...> and
others.  All rights reserved.

This software comes with ABSOLUTELY NO WARRANTY.  This
is free
software, and you are welcome to redistribute it under
certain
conditions.

To get the name of all copyright holders and detailed
license
information, type "sablevm --license" or look in the
directory
"/usr/share/sablevm".

The SableVM web site is located at
http://www.sablevm.org/ .

java.lang.NullPointerException
        at
java.net.URLClassLoader.getPermissions(URLClassLoader.java:488)
        at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:84)
        at
java.net.URLClassLoader.findClass(URLClassLoader.java:317)
        at
java.lang.ClassLoader.loadClass(ClassLoader.java:308)
        at
java.lang.ClassLoader.loadClass(ClassLoader.java:259)
        at Test.main(Test.java:10)
        at
java.lang.VirtualMachine.invokeMain(VirtualMachine.java)
        at
java.lang.VirtualMachine.main(VirtualMachine.java:88)
$ java Test Simple
class Simple


----------------------------------------------------------------------

Comment By: David Bélanger (davidbelanger)
Date: 2004-03-26 21:35

Message:
Logged In: YES 
user_id=694080


Works fine.  Will assume that it has been fixed.

David

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105523&aid=723743&group_id=5523