--- a/jdk/src/java.base/share/classes/java/lang/String.java	Fri Sep 05 15:09:05 2014 +0200
+++ b/jdk/src/java.base/share/classes/java/lang/String.java	Fri Aug 29 14:50:15 2014 -0700
@@ -2119,7 +2119,7 @@
      * @since 1.5
      */
     public boolean contains(CharSequence s) {
-        return indexOf(s.toString()) > -1;
+        return indexOf(s.toString()) >= 0;
     }
 
     /**