SwingThreading.java Source code

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Here is the source code for SwingThreading.java

Source

/*
 * Copyright (c) 2007, Romain Guy
 * 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 the TimingFramework project 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.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;

/**
 * @author Romain Guy
 */
public class SwingThreading extends JFrame implements ActionListener {
    private JLabel counter;

    private int tickCounter = 0;

    private static SwingThreading edt;

    public SwingThreading() {
        super("Swing Threading");

        JButton freezer = new JButton("Increment");
        freezer.addActionListener(this);

        counter = new JLabel("0");

        add(freezer, BorderLayout.CENTER);
        add(counter, BorderLayout.SOUTH);

        pack();
        setLocationRelativeTo(null);

        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    public void actionPerformed(ActionEvent e) {
        incrementLabel();
    }

    private void incrementLabel() {
        tickCounter++;
        Runnable code = new Runnable() {
            public void run() {
                counter.setText(String.valueOf(tickCounter));
            }
        };

        if (SwingUtilities.isEventDispatchThread()) {
            code.run();
        } else {
            SwingUtilities.invokeLater(code);
        }
    }

    public static void main(String... args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                edt = new SwingThreading();
                edt.setVisible(true);

                new Thread(new Runnable() {
                    public void run() {
                        while (true) {
                            try {
                                Thread.sleep(300);
                            } catch (InterruptedException e) {
                            }
                            edt.incrementLabel();
                        }
                    }
                }).start();
            }
        });
    }
}