Java example source code file (Closure1.java)

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Java - Java tags/keywords

closure1, error

The Closure1.java Java example source code

/*
 * Copyright (c) 2001, 2004, 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 4030374
 * @summary Initialization of up-level links, immediately after super(), occurs too late.
 * @author gafter
 *
 * @compile Closure1.java
 * @run main Closure1
 */

// Make sure the closure is present when the superclass is constructed.
// Specifically, N must have its T.this initialized when S calls hi().

public class Closure1 {
    static class S {
        void hi() { throw new Error(); }
        S() { hi(); }
    }
    static class T {
        void greet() { }
        class N extends S {
            void hi() {
                T.this.greet();
            }
        }
    }
    public static void main(String av[]) { new T().new N(); }
}