자바로 아날로그 시계 만들기 소스에 대해 질문....

밑에 부분 조금 수정했어요.. 시간 구하는 부분요..

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.Calendar;

interface Timed {
public void tick(Timer t);
}


class Timer extends Thread {
private Timed target;
private int interval;

public Timer(Timed t, int i) {
target = t; interval = i;
setDaemon(true);
}

public void run() {
while (true) {
try {
sleep(interval);
target.tick(this);
}
catch(InterruptedException e) {}
finally{

}
}
}
}

public class TimerTest extends Frame {
public TimerTest() {
setLayout(new GridLayout(2, 3));
add(new ClockCanvas("Seoul", 16));
add(new ClockCanvas("Chicago", 1));
add(new ClockCanvas("London", 7));
add(new ClockCanvas("Moscow", 10));
add(new ClockCanvas("Paris", 8));
add(new ClockCanvas("Beijing", 15));
}

public static void main(String[] args) {
Frame f = new TimerTest();
f.setSize(450, 300);
f.setBackground(Color.gray);
WindowDestroyer listener = new WindowDestroyer();
f.addWindowListener(listener);
f.setVisible(true);
}
}





class ClockCanvas extends Canvas implements Timed {

public int baseX = 10;
public int baseY = 10;
public int clockW = 100;
public int clockH = 100;
public int center = baseX + clockH/2;

private int seconds = 0;
private String city;
private int offset;
private final int LOCAL = 16;


public ClockCanvas(String c, int off) {
city = c; offset = off;



new Timer(this, 1000).start();
setSize(125, 125);
}

public void paint(Graphics g) {
g.setColor(Color.white);
g.fillOval(baseX,baseY, clockW, clockH);

double hourAngle = 2 * Math.PI * (seconds - 3 * 60 * 60) / (12 * 60 * 60);
double minuteAngle = 2 * Math.PI * (seconds - 15 * 60) / (60 * 60);
double secondAngle = 2 * Math.PI * (seconds - 15) / 60;
System.out.println("hourAngle : " + hourAngle);
System.out.println("minuteAngel : " + minuteAngle);
System.out.println("secondAngle : " + secondAngle);

g.setColor(Color.black);
g.drawLine(center, center, center + (int)(30 * Math.cos(hourAngle)),
center + (int)(30 * Math.sin(hourAngle)));
g.drawLine(center, center, center + (int)(40 * Math.cos(minuteAngle)),
center + (int)(40 * Math.sin(minuteAngle)));
g.setColor(Color.blue);
g.drawLine(center, center, center + (int)(45 * Math.cos(secondAngle)),
center + (int)(45 * Math.sin(secondAngle)));
g.setColor(Color.black);
g.drawString(city, baseX, baseY+clockH+10);
}

public void tick(Timer t) {

//추가 부분입니다. ★★★★★
Calendar cal = Calendar.getInstance();
//추가 부분입니다. ★★★★★

seconds = ((cal.get(Calendar.HOUR) - LOCAL + offset)* 60 * 60) +
(cal.get(Calendar.MINUTE) * 60) + cal.get(Calendar.SECOND);
System.out.println("tick 메소드입니다.seconds : " + seconds);
System.out.println("offset : " + offset);
System.out.println("LOCAL : " + LOCAL);
System.out.println("HOUR : " + cal.get(Calendar.HOUR_OF_DAY ));
System.out.println("Calendar.MINUTE * 60 : " + (cal.get(Calendar.MINUTE) * 60));
System.out.println("Calendar.SECOND : " + cal.get(Calendar.SECOND));
//System.out.println("getTime : " + Calendar.getTime() );
repaint();
}
}

class WindowDestroyer extends WindowAdapter {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}