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Java example source code file (Test6437265.java)

This example Java source code file (Test6437265.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

abstracttest, awt, borderlayout, component, error, gui, jlabel, jpanel, mypanel, names, string, swing, test6437265, the

The Test6437265.java Java example source code

/*
 * Copyright (c) 2006, 2007, 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 6437265
 * @summary Tests encoding of container with BorderLayout
 * @author Sergey Malenkov
 */

import java.awt.BorderLayout;
import java.awt.Component;
import javax.swing.JLabel;
import javax.swing.JPanel;

public final class Test6437265 extends AbstractTest<JPanel> {
    private static final String[] NAMES = {
            BorderLayout.EAST,
            BorderLayout.WEST,
            BorderLayout.NORTH,
            BorderLayout.SOUTH,
            BorderLayout.CENTER,
            BorderLayout.LINE_END,
            BorderLayout.PAGE_END,
            BorderLayout.LINE_START,
            BorderLayout.PAGE_START};

    public static void main(String[] args) {
        new Test6437265().test(true);
    }

    protected JPanel getObject() {
        JPanel panel = new MyPanel();
        for (String name : NAMES) {
            panel.add(name, new JLabel(name));
        }
        return panel;
    }

    protected void validate(JPanel before, JPanel after) {
        validate(before);
        validate(after);
        super.validate(before, after);
    }

    private static void validate(JPanel panel) {
        BorderLayout layout = (BorderLayout) panel.getLayout();
        for (Component component : panel.getComponents()) {
            String name = (String) layout.getConstraints(component);
            if (name == null)
                throw new Error("The component is not layed out: " + component);

            JLabel label = (JLabel) component;
            if (!name.equals(label.getText()))
                throw new Error("The component is layed out on " + name + ": " + component);
        }
    }

    public static final class MyPanel extends JPanel {
        public MyPanel() {
            // the bug is reproducible for containers
            // that uses BorderLayout as default layout manager.
            super(new BorderLayout(3, 3));
        }
    }
}

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