Java example source code file (LiteralInterfaceImpl.java)

This example Java source code file (LiteralInterfaceImpl.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

class, exception, literalinterface_1, literalinterface_2, literalinterface_3, literalinterfaceimpl

The LiteralInterfaceImpl.java Java example source code

/*
 * Copyright (c) 1998, 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.
 */

/*
 * @bug 4055017
 * @summary Test use of class literals within interfaces.
 * @author William Maddox (maddox)
 *
 * @compile LiteralInterface_1.java
 * @compile LiteralInterface_2.java
 * @compile LiteralInterface_3.java
 * @compile LiteralInterfaceImpl.java
 * @run main LiteralInterfaceImpl
 */

public class LiteralInterfaceImpl
implements LiteralInterface_1, LiteralInterface_2, LiteralInterface_3 {
    private static void check(Class c1, Class c2) throws Exception{
        if (c1 != c2) {
            throw new Exception("mismatch: " + c1 + ", " + c2);
        }
    }
    public static void main(String[] args) throws Exception {

        check(c1, Object.class);
        check(c2, Integer.class);

        check(foo, Object.class);
        check(bar, String.class);
        check(baz, Integer.class);

        // Due to another bug (4119981),
        // J is not inherited from LiteralInterface.
        // check(quux, J.class);

        check(quux, LiteralInterface_2.J.class);

        LiteralInterface_2.J o = new LiteralInterface_2.J();
        check(o.quem, Float.class);

    }
}