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Quelle ImplicitToString.java Sprache: JAVA |
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/* * Copyright (c) 1999, 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 4244408 * @summary toString() should be called implicitly when += is used. * * @run main ImplicitToString */ // The failure for this test is a ClassCastException when the code is run. import java.util.ArrayList; public class ImplicitToString { public static void main(String[] args) { String s = ""; ArrayList al = new ArrayList(); al.add(new Object()); // In the following line, toString() should be implicitly called. s += al.get(0); } }
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2026-04-02