1/* 2 * Copyright (c) 1998, 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/* @test 25 @bug 4130097 26 @summary toUpperCase and toLowerCase always return a new String, 27 whereas if there is no conversion that needs to be done, 28 they should be returning the same instance. 29 @author James Bond/007 30*/ 31public class CaseConvertSameInstance { 32 public static void main(String[] args) throws Exception { 33 /* these two are the real tests for this bug. */ 34 if ("foobar".toLowerCase() != "foobar") 35 throw new Exception("toLowerCase returned different object"); 36 if ("FOOBAR".toUpperCase() != "FOOBAR") 37 throw new Exception("toUpperCase returned different object"); 38 39 /* sanity test toLowerCase with some border conditions. */ 40 if (!("FooBar".toLowerCase().equals("foobar"))) 41 throw new Exception("toLowerCase broken"); 42 if (!("fooBar".toLowerCase().equals("foobar"))) 43 throw new Exception("toLowerCase broken"); 44 if (!("foobaR".toLowerCase().equals("foobar"))) 45 throw new Exception("toLowerCase broken"); 46 if (!("FOOBAR".toLowerCase().equals("foobar"))) 47 throw new Exception("toLowerCase broken"); 48 49 /* sanity test toUpperCase with some border conditions. */ 50 if (!("FooBar".toUpperCase().equals("FOOBAR"))) 51 throw new Exception("toUpperCase broken"); 52 if (!("fooBar".toUpperCase().equals("FOOBAR"))) 53 throw new Exception("toUpperCase broken"); 54 if (!("foobaR".toUpperCase().equals("FOOBAR"))) 55 throw new Exception("toUpperCase broken"); 56 if (!("foobar".toUpperCase().equals("FOOBAR"))) 57 throw new Exception("toUpperCase broken"); 58 } 59} 60