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Java example source code file (ClassExtends.java)

This example Java source code file (ClassExtends.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_extends, classextends, cloneable, comparator, hashmap, map, object, runnable, string, tadescription, tadescriptions, test

The ClassExtends.java Java example source code

/*
 * Copyright (c) 2009, 2013, 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.
 */

import static com.sun.tools.classfile.TypeAnnotation.TargetType.*;

/*
 * @test
 * @summary Test population of reference info for class extends clauses
 * @compile -g Driver.java ReferenceInfoUtil.java ClassExtends.java
 * @run main Driver ClassExtends
 */
public class ClassExtends {

    @TADescriptions({
        @TADescription(annotation = "TA", type = CLASS_EXTENDS, typeIndex = -1),
        @TADescription(annotation = "TB", type = CLASS_EXTENDS, typeIndex = 1)
    })
    public String regularClass() {
        return "class Test extends @TA Object implements Cloneable, @TB Runnable {"
               + "  public void run() { } }";
    }

    @TADescriptions({
        @TADescription(annotation = "TA", type = CLASS_EXTENDS, typeIndex = -1,
                genericLocation = { 3, 0 }),
        @TADescription(annotation = "TB", type = CLASS_EXTENDS, typeIndex = 1,
                genericLocation  = { 3, 1 })
    })
    public String regularClassExtendsParametrized() {
        return "class Test extends HashMap<@TA String, String> implements Cloneable, Map{ } ";
    }

    @TADescriptions({
        @TADescription(annotation = "TA", type = CLASS_EXTENDS, typeIndex = -1),
        @TADescription(annotation = "TB", type = CLASS_EXTENDS, typeIndex = 1)
    })
    public String abstractClass() {
        return "abstract class Test extends @TA Date implements Cloneable, @TB Runnable {"
               + "  public void run() { } }";
    }

    @TADescriptions({
        @TADescription(annotation = "TA", type = CLASS_EXTENDS, typeIndex = -1,
                genericLocation = { 3, 0 }),
        @TADescription(annotation = "TB", type = CLASS_EXTENDS, typeIndex = 1,
                genericLocation  = { 3, 1 })
    })
    public String abstractClassExtendsParametrized() {
        return "abstract class Test extends HashMap<@TA String, String> implements Cloneable, Map{ } ";
    }

    @TADescription(annotation = "TB", type = CLASS_EXTENDS, typeIndex = 1)
    public String regularInterface() {
        return "interface Test extends Cloneable, @TB Runnable { }";
    }

    @TADescription(annotation = "TB", type = CLASS_EXTENDS, typeIndex = 1,
            genericLocation  = { 3, 1 })
    public String regularInterfaceExtendsParametrized() {
        return "interface Test extends Cloneable, Map<String, @TB String>{ } ";
    }

    @TADescription(annotation = "TB", type = CLASS_EXTENDS, typeIndex = 1)
    public String regularEnum() {
        return "enum Test implements Cloneable, @TB Runnable { TEST; public void run() { } }";
    }

    @TADescription(annotation = "TB", type = CLASS_EXTENDS, typeIndex = 1,
            genericLocation  = { 3, 0 })
    public String regularEnumExtendsParametrized() {
        return
            "enum Test implements Cloneable, Comparator<@TB String> { TEST;  "
            + "public int compare(String a, String b) { return 0; }}";
    }

}

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