--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/instrument/RetransformApp.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+
+import java.io.PrintStream;
+import java.util.*;
+
+public class RetransformApp {
+
+    public static void main(String args[]) throws Exception {
+        (new RetransformApp()).run(args, System.out);
+    }
+
+    int foo(int x) {
+        return x * x;
+    }
+
+    public void run(String args[], PrintStream out) throws Exception {
+        out.println("start");
+        for (int i = 0; i < 4; i++) {
+            if (foo(3) != 9) {
+                throw new Exception("ERROR: unexpected application behavior");
+            }
+        }
+        out.println("undo");
+        RetransformAgent.undo();
+        for (int i = 0; i < 4; i++) {
+            if (foo(3) != 9) {
+                throw new Exception("ERROR: unexpected application behavior");
+            }
+        }
+        out.println("end");
+        if (RetransformAgent.succeeded()) {
+            out.println("Instrumentation succeeded.");
+        } else {
+            throw new Exception("ERROR: Instrumentation failed.");
+        }
+    }
+}