Snake Problem

Hello, to one and all.I am trying to develop a snake game using J2ME and its almost finish but in this apps i have used multiple threads ,each key press causes an event to start. Which means when i press 6 it calls t1(thread) in which i have used t1.start() method to allow snake to move right. Similarly, when i press 2 it calls t2(thread) in which i have used t2.start() method to allow snake to move up. Sample code of run method of this is shown below:

while(startX!=getWidth()-2 && Right==true) 
//end of row earlier here was (While)
            { 
 if(Last_num!=6)   
              // six was not the last key pressed
               {
// if((startX+1) is not red) 
                  { 

                 repaint();
                  serviceRepaints();
                  setDefault();
                  Right=true;
                  tail();
                  }

But when i again press 6 after pressing 2 my midlet throws an Exception(java.lang.IlligalThreadState Exception). I also tried to use try and catch block but it is not working. I want to stop the previous thread when i call the next. Please Help its very Important. I will be very thankful. please reply.

August 23, 2011 at 10:20 AM

hey use threads for the same and it will surely work