1 /*
2 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @library /test/lib
27 * @summary Proof of concept test for RedefineClassHelper
28 * @modules java.base/jdk.internal.misc
29 * @modules java.compiler
30 * java.instrument
31 * jdk.jartool/sun.tools.jar
32 * @run main RedefineClassHelper
33 * @run main/othervm -javaagent:redefineagent.jar RedefineClassTest
34 */
35
36 import static jdk.test.lib.Asserts.*;
37
38 /*
39 * Proof of concept test for the test utility class RedefineClassHelper
40 */
41 public class RedefineClassTest {
42
43 public static String newClass = "class RedefineClassTest$A { public int Method() { return 2; } }";
44 public static void main(String[] args) throws Exception {
45 A a = new A();
46 assertTrue(a.Method() == 1);
47 RedefineClassHelper.redefineClass(A.class, newClass);
48 assertTrue(a.Method() == 2);
49 }
50
51 static class A {
52 public int Method() {
53 return 1;
54 }
55 }
56 }
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1 /*
2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @library /test/lib
27 * @summary Proof of concept test for RedefineClassHelper
28 * @modules java.base/jdk.internal.misc
29 * @modules java.compiler
30 * java.instrument
31 * jdk.jartool/sun.tools.jar
32 * @run main RedefineClassHelper
33 * @run main/othervm -javaagent:redefineagent.jar RedefineClassTest
34 */
35
36 import static jdk.test.lib.Asserts.*;
37
38 /*
39 * Proof of concept test for the test utility class RedefineClassHelper
40 */
41
42 // package access top-level class to avoid problem with RedefineClassHelper
43 // and nested types.
44 class RedefineClassTest_A {
45 public int Method() {
46 return 1;
47 }
48 }
49
50 public class RedefineClassTest {
51
52 public static String newClass = "class RedefineClassTest_A { public int Method() { return 2; } }";
53 public static void main(String[] args) throws Exception {
54 RedefineClassTest_A a = new RedefineClassTest_A();
55 assertTrue(a.Method() == 1);
56 RedefineClassHelper.redefineClass(RedefineClassTest_A.class, newClass);
57 assertTrue(a.Method() == 2);
58 }
59 }
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