package untitled1;import java.awt.*;import java.awt.event.*;import java.applet.*;import java.util.Date;public class clock extends Applet implements Runnable{  Thread timer = null;  int lastXSecond = 0;  int lastYSecond = 0;  int lastXMinute = 0;  int lastYMinute = 0;  int lastXHour = 0;  int lastYHour = 0;  int xCenter = 100;  int yCenter = 100;  int radius = 80;  int xToday = 45;  int yToday = 220;  Date dummy = new Date();  String lastDate = dummy.toLocaleString();  boolean isStandalone = false;  /**Get a parameter value*/  public String getParameter(String key, String def) {    return isStandalone ? System.getProperty(key, def) :      (getParameter(key) != null ? getParameter(key) : def);  }  /**Construct the applet*/  public clock() {  }  /**Initialize the applet*/  public void init() {    try {      jbInit();    }    catch(Exception e) {      e.printStackTrace();    }  }  /**Component initialization*/  private void jbInit() throws Exception {  }  /**Get Applet information*/  public String getAppletInfo() {    return "Applet Information";  }  /**Get parameter info*/  public String[][] getParameterInfo() {    return null;  }  public void paint(Graphics g){      int xHour,yHour,xMinute,yMinute,xSecond,ySecond,second,minute,hour;      String today;      drawScale(g);      Date date = new Date();      second = date.getSeconds();      minute = date.getMinutes();      hour = date.getHours();      today = date.toLocaleString();      xSecond = (int)(Math.cos(second *3.14f/30 - 3.14f/2)*radius+xCenter);      ySecond = (int)(Math.sin(second *3.14f/30 - 3.14f/2)*radius+yCenter);      xMinute =  (int)(Math.cos(minute *3.14f/30 - 3.14f/2)*(radius-5)+xCenter);      yMinute =  (int)(Math.sin(minute *3.14f/30 - 3.14f/2)*(radius-5)+yCenter);      xHour = (int)(Math.cos((hour*30+minute/2)*3.14f/180-3.14f/2)*(radius-15)+xCenter);      yHour = (int)(Math.sin((hour*30+minute/2)*3.14f/180-3.14f/2)*(radius-15)+yCenter);      if (xSecond != lastXSecond ||ySecond != lastYSecond){          g.drawLine(xCenter,yCenter,lastXSecond,lastYSecond);          g.drawString(lastDate,xToday,yToday);      }      if (xMinute!=lastXMinute || yMinute != lastYMinute){         g.drawLine(xCenter,yCenter-1,lastXMinute,lastYMinute) ;         g.drawLine(xCenter-1,yCenter,lastXMinute,lastYMinute) ;      }      if (xHour != lastXHour||yHour != lastYHour){        g.drawLine(xCenter,yCenter-1,lastXHour,lastYHour);        g.drawLine(xCenter-1,yCenter,lastXHour,lastYHour);      }      g.setColor(Color.blue);      g.drawString(today,xToday,yToday);      g.setColor(Color.pink);      g.drawLine(xCenter,yCenter,xSecond,ySecond) ;      g.setColor(Color.orange) ;      g.drawLine(xCenter,yCenter-1,xMinute,yMinute);      g.drawLine(xCenter-1,yCenter,xMinute,yMinute);      g.setColor(Color.green);      g.drawLine(xCenter,yCenter-1,xHour,yHour);      g.drawLine(xCenter-1,yCenter,xHour,yHour);      lastXSecond = xSecond;      lastYSecond = ySecond;      lastXMinute = xMinute;      lastYMinute = yMinute;      lastXHour = xHour;      lastYHour = yHour;      lastDate = today;  }  public void drawScale(Graphics g){      int xHour,yHour,xMinute,yMinute;      g.setColor(Color.darkGray);      for (int i = 0;i<12;i++){         xHour = (int)(Math.cos((i*30)*3.14f/180-3.14f/2)*radius+xCenter);         yHour = (int)(Math.sin((i*30)*3.14f/180 - 3.14f/2)*radius+yCenter);         g.draw3DRect(xHour - 2,yHour - 2,4,4,true);      }      g.setColor(Color.gray);      for (int j = 0;j<60;j++){         xMinute = (int)(Math.cos(j*3.14f/30-3.14f/2)*radius + xCenter);         yMinute = (int)(Math.sin(j*3.14f/30-3.14f/2)*radius + yCenter);         g.draw3DRect(xMinute-1,yMinute-1,2,2,true);      }  }  public void start(){    if(timer == null){       timer = new Thread(this);       timer.start() ;    }  }  public void stop(){     timer = null;  }  public void run(){     while (timer != null){         try {            Thread.sleep(100);         }        catch (InterruptedException e){}        repaint();      }  }}