pls hlep, can't get output

This is program.But problem is that there is no output.I faded to
catch the problem.

import java.awt.*;
import javax.swing.*;
import java.util.Calendar;
class ClockDemo extends Canvas{

               int xmou 0; //set the center of circle
               int ymou 0; //set the center of circle

               double theta=-0.1047; //theta for second's hand
               int x=xmou; //x position of Second's hand
               int y=ymou; //y position of second's hand
               int p,b;
               int h;
               boolean flag=true;
               /*ClockDemo(){
                       //super();
                       setSize(500,500);
                       setBackground(Color.PINK);
                       setVisible(true);
               }*/
               public void paint(Graphics g){
                       DrawLine(g,xmou,ymou,x,y);

               }
               public void DrawLine(Graphics g,int startX,int
startY,int endX,int
endY){
                       h=80;
                       System.out.println("h:"+h);
                       //g.drawLine(200,200,165,248);
                       while(true){

                               g.drawLine(startX,startY,endX,endY);
                               newpoint();
                               //
this.repaint(startX,startY,endX,endY);
                               try{
     Thread.sleep(1000);
     }catch(Exception e){}
                       }
               }
               public void newpoint(){

    Calendar now = Calendar.getInstance(); //creating a Calendar
variable for getting current time

    //for second hand
    //h=60;
    x=xmou;
    y=ymou;
    theta=-0.1047;
    theta=theta*now.get(Calendar.SECOND);
    System.out.println("theta:"+theta);
    p= (int) (Math.sin(theta) * h);
    b= (int) (Math.cos(theta) * h);
    System.out.println("p:"+p+" "+"b:"+b);
    x=x-p;
    y=y-b;

    }

For veiwing

import javax.swing.*;
import java.awt.*;
class ClockDemoViewer {
       public static void main(String... arg){
               ClockDemo comp=new ClockDemo();
               JFrame jf=new JFrame("Clock Demo");

               jf.add(comp);
               jf.setSize(500,500);
               jf.setVisible(true);
 
jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
       }
}