Description oliver 2005-06-06 05:21:30 EDT

System: 
=======

Win2000, Eclipse 3.1M6

Test code:
==========

import java.util.Collections;
import java.util.Set;
import java.util.TreeSet;

public class Test {
    
    public interface Base {
    }
    
    abstract class Action<T extends Base> {
    }

    public class ActionImpl<T extends Base> extends Action<T> implements
Comparable<ActionImpl> {
        public int compareTo(ActionImpl o) {
            return 0;
        }
    }

    public void test() {
        Set<ActionImpl> set = new TreeSet<ActionImpl>();
        Collections.max(set);
    }
}

Javac compiles this code without warning but the Eclipse compiler produces the
following error:

"Bound mismatch: The generic method max(Collection<? extends T>) of type
Collections is not applicable for the arguments (Collection<? extends
Test.ActionImpl>) since the type Test.ActionImpl is not a valid substitute for
the bounded parameter <T extends Object & Comparable<? super T>>"

A workaround for the problem is to declare the variable as:

        Set<ActionImpl<Base>> set = new TreeSet<ActionImpl<Base>>();

However given that it compiles with javac I have submitted this as a bug.