public class TThread5 {
   boolean done = false;
   private int count1 = 0, count2 = 0, count3 = 0;

   private void init() {
      class Adder extends Thread {
         public void run() {
            while (count1 <= 100) {
               count1++; count2++; count3++;
               try {
                  Thread.sleep(50);
               } catch (InterruptedException e) {
                  System.out.println("Application Interrupted");
               }
            }
            done = true;
         }
      }

      class TestSync extends Thread {
         private int totAccess = 0;

         public void run() {
            int c1, c2, c3;
            while (!done) {
               totAccess++;
               c1 = count1; c2 = count2; c3 = count3;
               if ((c1 != c2) || (c2 != c3))
                  System.out.println("\rNot synced: " + c1 +
                                     ", " + c2 + ", " + c3);
            }
            System.out.println("Total sync accesses: " + totAccess);
         }
      }

      (new Adder()).start();
      (new TestSync()).start();
   }

   public static void main(String[] args) {
      TThread5 app = new TThread5();
      app.init();
   }
}