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Interrupt.java
No Java 2 support for APPLET!!
//: c14:Interrupt.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// The alternative approach to using
// stop() when a thread is blocked.
// <applet code=Interrupt width=200 height=100>
// </applet>
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import com.bruceeckel.swing.*;
class Blocked extends Thread {
public synchronized void run() {
try {
wait(); // Blocks
} catch(InterruptedException e) {
System.err.println("Interrupted");
}
System.out.println("Exiting run()");
}
}
public class Interrupt extends JApplet {
private JButton
interrupt = new JButton("Interrupt");
private Blocked blocked = new Blocked();
public void init() {
Container cp = getContentPane();
cp.setLayout(new FlowLayout());
cp.add(interrupt);
interrupt.addActionListener(
new ActionListener() {
public
void actionPerformed(ActionEvent e) {
System.out.println("Button pressed");
if(blocked == null) return;
Thread remove = blocked;
blocked = null; // to release it
remove.interrupt();
}
});
blocked.start();
}
public static void main(String[] args) {
Console.run(new Interrupt(), 200, 100);
}
} ///:~