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  1.  
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. class ClassA {
  8.     public void dispA(){
  9.         System.out.println("disp() method of ClassA");
  10.     }
  11. }
  12. class ClassB extends ClassA {
  13.     public void dispB(){
  14.         System.out.println("disp() method of ClassB");
  15.     }
  16. }
  17. class ClassC extends ClassA{
  18.     public void dispC(){
  19.         System.out.println("disp() method of ClassC");
  20.     }
  21. }
  22. class ClassD extends ClassA{
  23.     public void dispD(){
  24.         System.out.println("disp() method of ClassD");
  25.     }
  26. }
  27. class HierarchicalInheritanceTest {
  28.     public static void main(String args[]){
  29.          ClassB b = new ClassB();
  30.          b.dispB();
  31.          b.dispA();
  32.          ClassC c = new ClassC();
  33.          c.dispC();
  34.          c.dispA();
  35.          ClassD d = new ClassD();
  36.          d.dispD();
  37.          d.dispA();
  38.     }
  39. }
Success #stdin #stdout 0.04s 4386816KB
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Standard input is empty
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disp() method of ClassB
disp() method of ClassA
disp() method of ClassC
disp() method of ClassA
disp() method of ClassD
disp() method of ClassA
https://ideone.com/yZUL0p
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
secret

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