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  1. @FunctionalInterface
  2. interface Functional { void f(int a); }
  3.  
  4. class B {
  5.   void GenerateData(Functional f) {
  6.     f.f(12345);
  7.   }
  8. }
  9.  
  10. class A {
  11.   public Functional f;
  12.   public void XXX() {
  13.     B b = new B();
  14.     b.GenerateData(this::ZZZ);
  15.   }
  16.   public void ZZZ(int n) {
  17.     System.out.println("n = " + n);
  18.   }
  19. }
  20.  
  21. class Main {
  22.   public static void main(String[] args) {
  23.     A a = new A();
  24.     a.XXX();
  25.   }
  26. }
  27.  
Success #stdin #stdout 0.21s 33300KB
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Standard input is empty
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n = 12345
https://ideone.com/jTQ8tL
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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