Swing and Threading
/*
* 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();
}
});
}
}
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