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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		Doable d = new ConcreteImpl();
  13.         d.doStuff();
  14.  
  15. 	}
  16. }
  17.  
  18. interface Doable {
  19.     void doStuff();
  20. }
  21.  
  22. abstract class BaseImpl implements Doable {
  23.     @Override
  24.     public void doStuff() {
  25.         doOtherStuff();
  26.     }
  27.     protected abstract void doOtherStuff();
  28. }
  29.  
  30. class ConcreteImpl extends BaseImpl {
  31.     @Override
  32.     public void doOtherStuff() {
  33.         System.out.println("Raise ur dongers");
  34.     }
  35. }
  36.  
Success #stdin #stdout 0.1s 320512KB
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Raise ur dongers
https://ideone.com/N2lLgT
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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