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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. import java.util.function.*;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. 	public static void main (String[] args) throws java.lang.Exception
  12. 	{
  13. 		List<Foo> list = new ArrayList<>();
  14. 		list.add(new Foo("Hello"));
  15. 		list.add(new Foo("World"));
  16. 		show(list, Foo::getFullName);
  17. 	}
  18. 	private static <T> void show(List<T> list, Function<T,String> f) {
  19. 		for (T t : list) {
  20. 			System.out.println(f.apply(t));
  21. 		}
  22. 	}
  23. }
  24.  
  25. class Foo {
  26. 	private final String s;
  27. 	public Foo(String s) {this.s = s;}
  28. 	public String getFullName() {
  29. 		return s;
  30. 	}
  31. }
Success #stdin #stdout 0.2s 33264KB
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stdin
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Standard input is empty
stdout
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Hello
World
https://ideone.com/TAWCUI
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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