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/**
* @version 1.20 1999-04-26
* @author Cay Horstmann
*/
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Random;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
public class SwingThreadTest {
public static void main(String[] args) {
JFrame frame = new SwingThreadFrame();
frame.show();
}
}
class SwingThreadFrame extends JFrame {
public SwingThreadFrame() {
setTitle("SwingThread");
setSize(400, 300);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
model = new DefaultListModel();
JList list = new JList(model);
JScrollPane scrollPane = new JScrollPane(list);
JPanel p = new JPanel();
p.add(scrollPane);
getContentPane().add(p, "South");
JButton b = new JButton("Good");
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
new GoodWorkerThread(model).start();
}
});
p = new JPanel();
p.add(b);
b = new JButton("Bad");
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
new BadWorkerThread(model).start();
}
});
p.add(b);
getContentPane().add(p, "North");
}
private DefaultListModel model;
}
class BadWorkerThread extends Thread {
public BadWorkerThread(DefaultListModel aModel) {
model = aModel;
generator = new Random();
}
public void run() {
while (true) {
Integer i = new Integer(generator.nextInt(10));
if (model.contains(i))
model.removeElement(i);
else
model.addElement(i);
yield();
}
}
private DefaultListModel model;
private Random generator;
}
class GoodWorkerThread extends Thread {
public GoodWorkerThread(DefaultListModel aModel) {
model = aModel;
generator = new Random();
}
public void run() {
while (true) {
final Integer i = new Integer(generator.nextInt(10));
EventQueue.invokeLater(new Runnable() {
public void run() {
if (model.contains(i))
model.removeElement(i);
else
model.addElement(i);
}
});
yield();
}
}
private DefaultListModel model;
private Random generator;
}
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