timer

package timer;
import java.awt.*;
import javax.swing.*;
public class RunnableTimerEx extends JFrame{
	public RunnableTimerEx() {
		setTitle("타이머");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setSize(1000,600);
		Container c = getContentPane(); 
		c.setLayout(new FlowLayout());
		JLabel timerLabel = new JLabel();
		timerLabel.setFont(new Font("Gothic",Font.ITALIC,80));
		c.add(timerLabel);
		TimerRunnable runnable = new TimerRunnable(timerLabel);
		Thread th = new Thread(runnable);
		setVisible(true);
		th.start();
	}
	public static void main(String[] args) {
		new RunnableTimerEx();
	}
}
class TimerRunnable implements Runnable{
	private JLabel timerLabel;
	public TimerRunnable(JLabel timerLabel){
		this.timerLabel=timerLabel;
	}
	public void run() {
		int n=0;
		while(true) {
			timerLabel.setText(Integer.toString(n));
			n++;
			try {
				Thread.sleep(1000);
			}
			catch(InterruptedException e){
				return;
			}
		}
	}
}