class AlfabetGjennomgang implements Runnable{
  private String a = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

  @Override
  public void run(){
    try{
      for(int i = 0; i < a.length(); i++){
        Thread.sleep(1000);
        System.out.println(a.charAt(i));
      }
    }
    catch(InterruptedException e){
      System.out.println("Interrupted.");
    }
  }
}