Consider the program:

     1 import java.util.List;
     2 class A<E> {
     3 public void x(List<String> s) { }
     4 }
     5 class B extends A/*raw!*/ {
     6 public void x(List<String> s) { }
     7 }

Which produces this error message:

A.java:5: name clash: x(java.util.List<java.lang.String>) in B and x(java.util.List<java.lang.String>) in A have the same erasure, yet neither overrides the other
class B extends A/*raw!*/ {
^
1 error

The error is correct but the message could be improved:

A.java:5: name clash: x(java.util.List<java.lang.String>) in B and x(java.util.List) in A have the same erasure, yet neither overrides the other
class B extends A/*raw!*/ {
^
1 error

See http://forum.java.sun.com/thread.jspa?forumID=316&threadID=653504