Description Matt Hillsdon 2008-02-20 12:13:23 EST

Created attachment 90208 [details]
Java class demonstrating bug

Build ID: M20071023-1652

Steps To Reproduce:
Compile and run the attached class.

This gives an AbstractMethodError in Eclipse 3.3.1.1.  I was surprised to find this works fine in Sun Java 1.6.0_03, to be honest I'd expected a compile error from both.

Exception in thread "main" java.lang.AbstractMethodError: GenericsAbstractMethodError$ConcreteFoo.doSomething(Ljava/lang/Object;)V
	at GenericsAbstractMethodError.feedFoosValueIntoFoo(GenericsAbstractMethodError.java:33)
	at GenericsAbstractMethodError.testGenericString(GenericsAbstractMethodError.java:46)
	at GenericsAbstractMethodError.main(GenericsAbstractMethodError.java:51)

Running javap on the class files shows that in the Sun Java compiled class there is a
    public void doSomething(java.lang.Object);
method.  In the Eclipse case there is no doSomething method on ConcreteFoo (explaining the AbstractMethodError).