import java.applet.*;
import java.awt.*;
import java.util.*;
import java.text.*;
public class Jam1 extends Applet implements Runnable
{ int width, height;
Thread t = null;
boolean threadSuspended;
int jam=0, menit=0, detik=0;
String strWaktu = "";
public void init()
{ width = getSize().width;
height = getSize().height;
setBackground(Color.black);
}
public void start()
{ if(t == null)
{ t = new Thread(this);
t.setPriority(Thread.MIN_PRIORITY);
threadSuspended = false;
t.start();
} else
{ if(threadSuspended)
{ threadSuspended=false;
synchronized(this)
{ notify();
}
}
}
}
public void stop()
{ threadSuspended = true;
}
public void run()
{ try
{ while(true)
{ Calendar cal = Calendar.getInstance();
jam = cal.get(Calendar.HOUR_OF_DAY);
if(jam > 12) jam -= 12;
menit = cal.get(Calendar.MINUTE);
detik = cal.get(Calendar.SECOND);

SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss", Locale.getDefault());
Date tgl = cal.getTime();
strWaktu = sdf.format(tgl);

if(threadSuspended)
{ synchronized(this)
{ while(threadSuspended)
{ wait();
}
}
}
repaint();
Color[] c = {Color.red, Color.green, Color.yellow, Color.black};
int[] x = {6, 12, 15};
setBackground(c[detik%4]);
t.sleep(1000);
}
} catch(InterruptedException e)
{
}
}
void drawHand(double angle, int radius, Graphics g)
{ angle -= 0.5 * Math.PI;
int x = (int) (radius*Math.cos(angle));
int y = (int) (radius*Math.sin(angle));
g.drawLine(width/2, height/2, width/2 + x, height/2 + y);
}
void drawWedge(double angle, int radius, Graphics g)
{ angle -= 0.5 * Math.PI;
int x = (int) (radius*Math.cos(angle));
int y = (int) (radius*Math.sin(angle));
angle += 2*Math.PI/3;
int x2 = (int) (5*Math.cos(angle));
int y2 = (int) (5*Math.sin(angle));
angle += 2*Math.PI/3;
int x3 = (int) (5*Math.cos(angle));
int y3 = (int) (5*Math.sin(angle));
g.drawLine(width/2 + x2, height/2 + y2, width/2 + x, height/2 + y);
g.drawLine(width/2 + x3, height/2 + y3, width/2 + x, height/2 + y);
g.drawLine(width/2 + x2, height/2 + y2, width/2 + x3, height/2 + y3);
}
public void paint(Graphics g)
{ g.setColor(Color.white);
drawWedge(2*Math.PI * jam / 12, width/5, g);
drawWedge(2*Math.PI * menit / 60, width/3, g);
drawHand(2*Math.PI * detik / 60, width/3, g);
g.setColor(Color.white);
g.drawString(strWaktu, 10, height-10);
for(int i=0;i<12;i++)
{ int radius = width/2;
int x = (int) (0.8*radius*Math.cos(i*Math.PI/6-0.5*Math.PI));
int y = (int) (0.8*radius*Math.sin(i*Math.PI/6-0.5*Math.PI));
String j = Integer.toString(i);
if(i==0) j="12";
g.drawString(j, x+width/2, y+height/2);
}
}
}