Java-Counting the instance of a class

---TestInstanceCounter.class---

class TestInstanceCounter {
 public static void main(String[] args) {
  SomeClass sc1 = new SomeClass();
  SomeClass sc2 = new SomeClass();

  System.out.println("You have created " 
   + SomeClass.countInstances() 
   + " instances of " 
   + "the class called \"SomeClass\"");

  System.out.println("---------------------------------------------");

  SomeClass sc3 = new SomeClass();
  SomeClass sc4 = new SomeClass();
  SomeClass sc5 = new SomeClass();

  System.out.println("You have created " 
   + SomeClass.countInstances() 
   + " instances of the class called \"SomeClass\"");

  System.out.println("---------------------------------------------");
 }
}


---SomeClass.class---

class SomeClass {
/*initialized when class is loaded and all the instances of the class share the same static variable*/
 private static int instanceCtr = 0;
 SomeClass() {
  instanceCtr++;
 }
 public static int countInstances() {
  return instanceCtr;
 }
}