I have been attempting to use reflection, in particular to get the superclass of a particular class, but this seems to fail when using Classpath v0.97.2 with JamVM 1.5.0.
In a stripped down version of what I am trying to achieve, I am attempting to run the following code, which I have unceremoniously poached from http://developer.classpath.org/pipermail/classpath/2006-November/001605.html: public class Main { static class A extends ArrayList<String> {}; public static void main(String[] args) { A a = new A(); Object x = a; ((Collection)x).add(new Byte((byte) 1)); System.out.println(x.getClass().getGenericSuperclass()); System.out.println("We have a list parametrized with: " + ((ParameterizedType)x.getClass().getGenericSuperclass()).getActualTypeArguments()[0]); } } This code is compiled using the Eclipse Compiler and run on a PowerPC implementation. Classpath was compiled using Sun's javac compiler, version 1.6. Running the code, however, yields the following stack trace: # jamvm -Xbootclasspath:/share/jamvm/classes:/usr/local/classpath/share/classpath Main java.lang.TypeNotPresentException: type "java$util$ArrayList" not found at gnu.java.lang.reflect.ParameterizedTypeImpl.resolve(GenericSignatureParser.java:127) at gnu.java.lang.reflect.TypeImpl.resolve(TypeImpl.java:59) at gnu.java.lang.reflect.ClassSignatureParser.getSuperclassType(ClassSignatureParser.java:83) at java.lang.Class.getGenericSuperclass(Class.java:1712) at Main.main(Main.java:16) Caused by: java.lang.ClassNotFoundException: java$util$ArrayList at java.lang.VMClass.forName(Native Method) at java.lang.Class.forName(Class.java:233) at gnu.java.lang.reflect.ParameterizedTypeImpl.resolve(GenericSignatureParser.java:123) ...4 more It seems to me that the refelction doesn't seem to be finding the type correctly. Does anybody have any insight as to why this might be? I have found the following older forum posts, but neither have been that helpful in trying to diagnose the issue. http://developer.classpath.org/pipermail/classpath/2006-November/001605.html http://www.nabble.com/Error-in-resolving-java.util.Set-td9779444.html Thanks! Tom
