1 /* 2 * Copyright (c) 2013, 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 import java.io.*; 25 import java.lang.instrument.*; 26 27 public class RedefineSubclassWithTwoInterfacesApp { 28 public static void main(String args[]) throws Exception { 29 System.out.println("Hello from RedefineSubclassWithTwoInterfacesApp!"); 30 31 new RedefineSubclassWithTwoInterfacesApp().doTest(); 32 33 System.exit(0); 34 } 35 36 private void doTest() throws Exception { 37 RedefineSubclassWithTwoInterfacesImpl impl 38 = new RedefineSubclassWithTwoInterfacesImpl(); 39 RedefineSubclassWithTwoInterfacesRemote remote 40 = new RedefineSubclassWithTwoInterfacesRemote(impl, impl); 41 String mesg; 42 43 // make an echo() call before any redefinitions: 44 mesg = remote.echo("test message #0"); 45 System.out.println("RedefineSubclassWithTwoInterfacesApp: mesg='" 46 + mesg + "' before any redefines"); 47 48 49 // redefining RedefineSubclassWithTwoInterfacesImpl before 50 // RedefineSubclassWithTwoInterfacesTarget fails: 51 do_redefine("RedefineSubclassWithTwoInterfacesImpl", 1); 52 do_redefine("RedefineSubclassWithTwoInterfacesTarget", 1); 53 54 mesg = remote.echo("test message #1"); 55 System.out.println("RedefineSubclassWithTwoInterfacesApp: mesg='" 56 + mesg + "' after redefine #1"); 57 } 58 59 private static void do_redefine(String className, int counter) 60 throws Exception { 61 File f = new File(className + "_" + counter + ".class"); 62 System.out.println("Reading test class from " + f); 63 InputStream redefineStream = new FileInputStream(f); 64 65 byte[] redefineBuffer 66 = NamedBuffer.loadBufferFromStream(redefineStream); 67 68 ClassDefinition redefineParamBlock = new ClassDefinition( 69 Class.forName(className), redefineBuffer); 70 71 RedefineSubclassWithTwoInterfacesAgent.getInstrumentation(). 72 redefineClasses(new ClassDefinition[] {redefineParamBlock}); 73 } 74 }