1 /* 2 * Copyright (c) 2015, 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 * @summary Test that StringConcat is working for JDK >= 9 27 * @compile -source 6 -target 6 TestIndyStringConcat.java 28 * @run main TestIndyStringConcat false 29 * @clean TestIndyStringConcat* 30 * @compile -source 7 -target 7 TestIndyStringConcat.java 31 * @run main TestIndyStringConcat false 32 * @clean TestIndyStringConcat* 33 * @compile -source 8 -target 8 TestIndyStringConcat.java 34 * @run main TestIndyStringConcat false 35 * @clean TestIndyStringConcat* 36 * @compile -XDstringConcat=inline -source 9 -target 9 TestIndyStringConcat.java 37 * @run main TestIndyStringConcat false 38 * @clean TestIndyStringConcat* 39 * @compile -XDstringConcat=indy -source 9 -target 9 TestIndyStringConcat.java 40 * @run main TestIndyStringConcat true 41 * @clean TestIndyStringConcat* 42 * @compile -XDstringConcat=indyWithConstants -source 9 -target 9 TestIndyStringConcat.java 43 * @run main TestIndyStringConcat true 44 */ 45 public class TestIndyStringConcat { 46 47 private static class MyObject { 48 public String toString() { 49 throw new RuntimeException("Boyyaa"); 50 } 51 } 52 53 class Inner { } 54 55 public static void main(String[] args) { 56 boolean useIndyConcat = Boolean.valueOf(args[0]); 57 try { 58 String s = "Foo" + new MyObject(); 59 } catch (RuntimeException ex) { 60 boolean indifiedStringConcat = false; 61 ex.printStackTrace(); 62 for (StackTraceElement e : ex.getStackTrace()) { 63 if (e.getClassName().startsWith("java.lang.String$Concat") && 64 e.getMethodName().equals("concat")) { 65 indifiedStringConcat = true; 66 break; 67 } 68 } 69 if (indifiedStringConcat != useIndyConcat) { 70 throw new AssertionError(); 71 } 72 } 73 } 74 }