/* * Copyright (c) 1997, 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. */ /* @test @bug 4089062 @summary A String created from a StringBuffer can be overwritten if setLength() to a value less than the buffer length is called on the StringBuffer and then the StringBuffer is appended to. @author Robert Field */ public class SetLength { public static void main(String[] argv) throws Exception { StringBuffer active = new StringBuffer(); active.append("first one"); String a = active.toString(); active.setLength(0); active.append("second"); String b = active.toString(); active.setLength(0); System.out.println("first: " + a); System.out.println("second: " + b); if (!a.equals("first one")) { throw new Exception("StringBuffer.setLength() overwrote string"); } } }