jdk/src/share/demo/jfc/SwingApplet/SwingApplet.java

/*
 * Copyright 1997-1998 Sun Microsystems, Inc.  All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 */

import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.applet.*;
import javax.swing.*;

/**
 * A very simple applet.
 */
public class SwingApplet extends JApplet {

    JButton button;

    public void init() {

        // Force SwingApplet to come up in the System L&F
        String laf = UIManager.getSystemLookAndFeelClassName();
        try {
            UIManager.setLookAndFeel(laf);
            // If you want the Cross Platform L&F instead, comment out the above line and
            // uncomment the following:
            // UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
        } catch (UnsupportedLookAndFeelException exc) {
            System.err.println("Warning: UnsupportedLookAndFeel: " + laf);
        } catch (Exception exc) {
            System.err.println("Error loading " + laf + ": " + exc);
        }

        getContentPane().setLayout(new FlowLayout());
        button = new JButton("Hello, I'm a Swing Button!");
        getContentPane().add(button);
    }

    public void stop() {
        if (button != null) {
            getContentPane().remove(button);
            button = null;
        }
    }
}