fork(1) download
  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. Optional<Foo> n = Optional.<Foo>ofNullable(null);
  13. Foo m = n.orElseGet(() -> new Foo());//n.orElseGet(Foo::new);
  14. System.out.println("Foo: " + m.a);
  15. }
  16. }
  17.  
  18. class Foo {
  19. public int a, b;
  20. public Foo() { this.a = 1; this.b = 2;}
  21. }
Success #stdin #stdout 0.21s 320640KB
stdin
Standard input is empty
stdout
Foo: 1