/*

 * Copyright (c) 2005, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.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.");

        }

    }

}