/* * Copyright (c) 2015, 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 * @summary Test that StringConcat is working for JDK >= 9 * @compile -source 6 -target 6 TestIndyStringConcat.java * @run main TestIndyStringConcat false * @clean TestIndyStringConcat* * @compile -source 7 -target 7 TestIndyStringConcat.java * @run main TestIndyStringConcat false * @clean TestIndyStringConcat* * @compile -source 8 -target 8 TestIndyStringConcat.java * @run main TestIndyStringConcat false * @clean TestIndyStringConcat* * @compile -XDstringConcat=inline -source 9 -target 9 TestIndyStringConcat.java * @run main TestIndyStringConcat false * @clean TestIndyStringConcat* * @compile -XDstringConcat=indy -source 9 -target 9 TestIndyStringConcat.java * @run main TestIndyStringConcat true * @clean TestIndyStringConcat* * @compile -XDstringConcat=indyWithConstants -source 9 -target 9 TestIndyStringConcat.java * @run main TestIndyStringConcat true */ public class TestIndyStringConcat { private static class MyObject { public String toString() { throw new RuntimeException("Boyyaa"); } } class Inner { } public static void main(String[] args) { boolean useIndyConcat = Boolean.valueOf(args[0]); try { String s = "Foo" + new MyObject(); } catch (RuntimeException ex) { boolean indifiedStringConcat = false; ex.printStackTrace(); for (StackTraceElement e : ex.getStackTrace()) { if (e.getClassName().startsWith("java.lang.String$Concat") && e.getMethodName().equals("concat")) { indifiedStringConcat = true; break; } } if (indifiedStringConcat != useIndyConcat) { throw new AssertionError(); } } } }