--- jsr166/src/test/tck/TreeSubMapTest.java	2011/03/15 19:47:07	1.14
+++ jsr166/src/test/tck/TreeSubMapTest.java	2011/05/27 19:10:32	1.15
@@ -376,7 +376,7 @@ public class TreeSubMapTest extends JSR1
         NavigableMap map = map5();
         String s = map.toString();
         for (int i = 1; i <= 5; ++i) {
-            assertTrue(s.indexOf(String.valueOf(i)) >= 0);
+            assertTrue(s.contains(String.valueOf(i)));
         }
     }
 
@@ -937,7 +937,7 @@ public class TreeSubMapTest extends JSR1
         NavigableMap map = dmap5();
         String s = map.toString();
         for (int i = 1; i <= 5; ++i) {
-            assertTrue(s.indexOf(String.valueOf(i)) >= 0);
+            assertTrue(s.contains(String.valueOf(i)));
         }
     }