diff -r ca2e2b85f437 -r 0f3da6af9799 src/share/classes/com/sun/tools/javac/tree/JCTree.java
--- a/src/share/classes/com/sun/tools/javac/tree/JCTree.java	Tue Sep 13 16:37:09 2011 -0700
+++ b/src/share/classes/com/sun/tools/javac/tree/JCTree.java	Wed Sep 14 12:07:50 2011 -0700
@@ -538,6 +538,21 @@
             super.setPos(pos);
             return this;
         }
+
+        /** Convert a statement tree to a pretty-printed string. */
+        @Override
+        public String toString() {
+            StringWriter s = new StringWriter();
+            try {
+                new Pretty(s, false).printStat(this);
+            }
+            catch (IOException e) {
+                // should never happen, because StringWriter is defined
+                // never to throw any IOExceptions
+                throw new AssertionError(e);
+            }
+            return s.toString();
+        }
     }
 
     public static abstract class JCExpression extends JCTree implements ExpressionTree {