Java example source code file (ToStringMethodTest.java)

This example Java source code file (ToStringMethodTest.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

attribute, management, objectinstance, objectname, runtimeexception, string, the, tostringmethodtest, unknown

The ToStringMethodTest.java Java example source code

/*
 * Copyright (c) 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 5080083
 * @summary Test new added method "toString"
 * @author Shanliang JIANG
 * @run clean ToStringMethodTest
 * @run build ToStringMethodTest
 * @run main ToStringMethodTest
 */

import javax.management.*;

public class ToStringMethodTest {
    public static void main(String[] args) throws Exception {

        // for ObjectInstance class
        System.out.println(">>> Test on the method \"toString\" of the ObjectInstance class.");

        final ObjectName on = new ObjectName(":key=me");
        final String className = "Unknown";
        final ObjectInstance oi = new ObjectInstance(on, className);

        final String expected = className+"["+on.toString()+"]";

        if (!expected.equals(oi.toString())) {
            throw new RuntimeException("The test failed on the method \"toString\" "+
                                       "of the ObjectInstance class, expected to get "+
                                       expected+", but got "+oi.toString());
        }

        // for Attribute class
        System.out.println(">>> Test on the method \"toString\" of the Attribute class.");
        final String name = "hahaha";
        final Object value = new int[0];
        final String exp = name + " = " + value;

        final Attribute at = new Attribute(name, value);

        if (!exp.equals(at.toString())) {
            throw new RuntimeException("The test failed on  the method \"toString\" "+
                                       "of the Attribute class, expected to get "+exp+
                                       ", but got "+at.toString());
        }

        System.out.println(">>> All passed.");
    }
}