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| import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.Timer;
public class LocalInnerClassTest
{
public static void main(String[] args)
{
TalkingClock clock = new TalkingClock();
clock.start(1000, true);
// keep program running until user selects "Ok"
JOptionPane.showMessageDialog(null, "Quit program?");
System.exit(0);
}
}
/**
A clock that prints the time in regular intervals.
*/
class TalkingClock
{
/**
Starts the clock.
@param interval the interval between messages (in milliseconds)
@param beep true if the clock should beep
*/
public void start(int interval, final boolean beep)
{
class TimePrinter implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
Date now = new Date();
System.out.println("At the tone, the time is " + now);
if (beep) Toolkit.getDefaultToolkit().beep();
}
}
ActionListener listener = new TimePrinter();
Timer t = new Timer(interval, listener);
t.start();
}
private int interval;
private boolean beep;
} |
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