public class TacheA implements Runnable {
  public void run(){
    while(true){
      synchronized(System.out){
        System.out.println("Test A 1");
        System.out.println("Test A 2");
        System.out.println("Test A 3");
        System.out.println("Test A 4");
        System.out.println("Test A 5");
        System.out.println("Test A 6");
        try{
          Thread.sleep(100);
        }
        catch (InterruptedException e){
          e.printStackTrace();
        }
      }
    }
  }
}