while running multiple thread repaint isnt being called....

Code:

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import java.applet.*;
import java.awt.*;

public class TrafficControl extends Applet implements Runnable{
        Thread t;
        Color c1,c2,c3;
        public void init()
        {         
                for(int a=1;;a++)
                {
                        if(a%3==1)starter("RED");
                        else if(a%3==2)starter("YELLOW");
                        else starter("GREEN");
                       
                        try{
                                t.join();
                                Thread.sleep(1000);
                          }  catch(Exception e){System.out.println(e);}
                }
                         
        }
        public void starter(String s)
        {
                t=new Thread(this,s);
            t.start();
        }
        public void run()
        {
                System.out.println(t);
                String pro=t.getName();
                c1=c2=c3=Color.WHITE;
                if(pro.equals("RED"))
                c1=Color.RED;
        else if(pro.equals("YELLOW"))
            c2=Color.YELLOW;
        else
            c3=Color.GREEN;                 
                repaint();      //this repaint is nvr called
        }
       
        public void paint(Graphics g)
    {
      System.out.println("In paint"); //thread nvr enters paint???? y ??
                                          //it'll only enter ven infinite loop will finish 
            g.drawRect(0, 0, 30, 80);
            g.setColor(c1);
            g.fillOval(5, 5, 20, 20);
            g.setColor(c2);
            g.fillOval(5, 30, 20, 20);
            g.setColor(c3);
            g.fillOval(5, 55, 20, 20);           
    }
}

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You appear to be calling Thread.sleep on the event thread, and thereby put your applet to sleep.

Also, please look at my link about using code tags. i will try to add them to your post above.

hw can i mend it..using above code...?

Put the loop in init() into its own thread.

I dont think you be calling the sleep() method from the init() method. You should be calling the sleep() method in the run() method...

Quote:

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public void run()
{
System.out.println(t);
String pro=t.getName();
c1=c2=c3=Color.WHITE;
if(pro.equals("RED"))
c1=Color.RED;
else if(pro.equals("YELLOW"))
c2=Color.YELLOW;
else
c3=Color.GREEN;
repaint(); //this repaint is nvr called

try{
Thread.sleep(1000);
} catch(Exception e){System.out.println(e);}


}

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