fork download
copy 
  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.util.function.*;
  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. static class Foo<F extends Foo<F>>
  11. {
  12.     <V> void myself(final Optional<V> value, final BiConsumer<? super F, V> destination)
  13.     {
  14.         if (value.isPresent())
  15.         {
  16.             destination.accept((F) this, value.get());
  17.         }
  18.     }
  19. }
  20.  
  21. static class Bar extends Foo<Bar> {
  22. 	void setAnswer(Integer i) {}
  23. }
  24.  
  25. void outThere(Bar bar)
  26. {
  27.     bar.myself(Optional.of(42), Bar::setAnswer);
  28. }
  29.  
  30. 	public static void main (String[] args) throws java.lang.Exception
  31. 	{
  32. 		// your code goes here
  33. 	}
  34. }
Success #stdin #stdout 0.09s 47004KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/ohBJiM
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!