Java example source code file (SwingApplet.java)

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Java - Java tags/keywords

awt, failed, flowlayout, gui, hello, i\'m, interruptedexception, invocationtargetexception, japplet, jbutton, log, logging, nimbus, override, reflection, runnable, suppresswarnings, swing, swingapplet

The SwingApplet.java Java example source code

/*
 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. 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 Oracle 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.
 */

/*
 * This source code is provided to illustrate the usage of a given feature
 * or technique and has been deliberately simplified. Additional steps
 * required for a production-quality application, such as security checks,
 * input validation and proper error handling, might not be present in
 * this sample code.
 */



import java.awt.FlowLayout;
import java.lang.reflect.InvocationTargetException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;


/**
 * A very simple applet.
 */
@SuppressWarnings("serial")
public class SwingApplet extends JApplet {

    JButton button;

    private void initUI() {
        // Trying to set Nimbus look and feel
        try {
            UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
        } catch (Exception ex) {
            Logger.getLogger(SwingApplet.class.getName()).
                    log(Level.SEVERE, "Failed to apply Nimbus look and feel", ex);
        }
        getContentPane().setLayout(new FlowLayout());
        button = new JButton("Hello, I'm a Swing Button!");
        getContentPane().add(button);
        getContentPane().doLayout();
    }

    @Override
    public void init() {
        try {
            SwingUtilities.invokeAndWait(new Runnable() {

                @Override
                public void run() {
                    initUI();
                }
            });
        } catch (InterruptedException ex) {
            Logger.getLogger(SwingApplet.class.getName()).
                    log(Level.SEVERE, null, ex);
        } catch (InvocationTargetException ex) {
            Logger.getLogger(SwingApplet.class.getName()).
                    log(Level.SEVERE, null, ex);
        }
    }

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