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  1. class Parent {
  2. }
  3.  
  4. class Child extends Parent {
  5. }
  6.  
  7. interface I {
  8. 	Parent f(Child e);
  9. }
  10.  
  11. class D implements I {
  12. 	public Child f(Parent e) {
  13. 		return null;
  14. 	}
  15. }
Compilation error #stdin compilation error #stdout 0.08s 380160KB
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Standard input is empty
compilation info 
Main.java:11: error: D is not abstract and does not override abstract method f(Child) in I
class D implements I {
^
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Standard output is empty
https://ideone.com/MSnL3x
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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