Description Markus Keller 2010-04-01 10:59:11 EDT

class Test<A> {
    interface MyInt<K> {
        K getKey();
    }
    class MyEntry implements MyInt<A> {
        public A getKey() { return null; }
        public boolean equals(Object o) {
            if(!(o instanceof MyEntry))
                return false;
            MyEntry m = (MyEntry) o;
            return m.getKey().equals(getKey());
        }
    }
}

The error message at "instanceof MyEntry" has its arguments swapped:

> "Cannot perform instanceof check against parameterized type Test<A>.MyEntry.
                                       should be "MyEntry" -> ^^^^^^^^^^^^^^^
> Use the form MyEntry instead since further generic type information will be
               ^^^^^^^ <- should be "Test<A>.MyEntry"
> erased at runtime".