Class MyHelper

classpath/java/util/IdentityHashMap.java:72–82

  }

  private static class MyHelper<K, V>
    extends HashMap.MyHelper<K, V>
  {
    public int hash(K a) {
      return (a == null ? 0 : System.identityHashCode(a));
    }

    public boolean equal(K a, K b) {
      return a == b;
    }    
  }
}