public class References {
   public static void main(String[] args) {
      Thing1 t1 = new Thing1();
      System.out.println(t1);
      System.out.println(new Thing1());
      System.out.println(new Thing2());
   }
}

class Thing1 { }

class Thing2 {
   public String toString() {
      return "hello";
   }
}