FULL PRODUCT VERSION :
java version "1.5.0_02"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_02-b09)
Java HotSpot(TM) Client VM (build 1.5.0_02-b09, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
The generated proxy is not put in the proper package.

The Javadoc for java.lang.reflect.Proxy says:

"If a proxy class implements a non-public interface, then it will be defined in the same package as that interface. Otherwise, the package of a proxy class is also unspecified. Note that package sealing will not prevent a proxy class from being successfully defined in a particular package at runtime, and neither will classes already defined by the same class loader and the same package with particular signers."

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1) Put Outer.java and Test.java included below in package p1.
2) Compile them.
3) Run p1.Test.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Class class p1.$Proxy0
is in package p1
Class class p1.$Proxy1
is in package p1
ACTUAL -
Class class p1.$Proxy0
is in package p1
Class class $Proxy1
is in null

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Since the proxy is in the wrong package, this can lead to spurious and tricky IllegalAccessErrors like this:

java.lang.IllegalAccessError: tried to access class com.foo.Bar from class $Proxy1

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package p1;

interface Outer {
    interface Inner {
    }
}

============================================================

package p1;

import java.lang.reflect.*;

public class Test {
    
    public static void main(String[] args) {
        makeProxy(Outer.class);
        makeProxy(Outer.Inner.class);
    }

    private static void makeProxy(Class oneInterface) {
        ClassLoader loader = Test.class.getClassLoader();
        Class[] interfaces = new Class[] { oneInterface };
        InvocationHandler handler = new InvocationHandler() {
            public Object invoke(Object proxy, Method method, Object[] args) {
                System.out.println("doing " + method);
                return method;
            }
        };
        Object proxy = Proxy.newProxyInstance(
            loader,interfaces,handler);
        System.out.println("Class " + proxy.getClass());
        System.out.println("is in " + proxy.getClass().getPackage());
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Increase visibility from package to protected as required to eliminate any IllegalAccessErrors.
###@###.### 2005-04-18 19:34:48 GMT