1. class ClassA {2. public int numberOfInstances;3. protected ClassA(int numberOfInstances) {4. this.numberOfInstances = numberOfInstances;5. }6. }7. public class ExtendedA extends ClassA {8. private ExtendedA(int numberOfInstances) {9. super(numberOfInstances);10. }11. public static void main(String[] args) {12. ExtendedA ext = new ExtendedA(420);13. System.out.print(ext.numberOfInstances);14. }15. }