Multi-threading programing .

[yifat60]

HI.
i am writting a very simple programe using muti-threading.
need your advice where should i add the sychronayze if at all..

public class CoinFlipping implements Runnable {

	
   
	public void run() {
	 int rundomNumber;
	
	 int counter=0;
	
	 for (int i = 0; i <= 1000; i++) {
	      
	      Random rand=new Random();
		   rundomNumber=rand.nextInt(2);
	
		 if ( counter >=3 )
		 {
			 System.out.printf("%s got %d heads in a row.%n",
                     Thread.currentThread().getName(), 
                     counter);
		 }
		 
		 if (rundomNumber == 1)
			 counter ++;
		 else 
			 counter=0;
         
	 }
		
	}
	public  CoinFlipping(int num){
	
		ExecutorService taskList = 
		      Executors.newFixedThreadPool(10);
		
		 for (int i = 0; i < num; i++) {
			  taskList.execute(this);
		
	}
	}

then i call to the main programe with :
new ConiFlipping(5)

thanks!

[Norm]

You would use synchronized where there is a possibility of more than one thread updating a variable at the same time.
You want the threads to take turns and not try to update a value at the same time.