» » » Implement java 8 functional interface using lambda example program

  • Functional interfaces introduces in java 8 .
  • Functional interfaces will have single abstract method in it.
  • Check here for full details on Java 8 functional interface with example.
  • Functional interfaces will be implemented by java 8 Lamda expressions.
  • Lets see an example program on how can we use functional interfaces or how can we implement functional interfaces using Lamda expression in java 8.
  • Create one functional interface with one abstract method in it.
  • Create a class and implement this abstract method using Lamda Expressions.



#1: Java example program to create functional interface.

functional interface example in java 8 using lamda expressions


#2: Java example program to implement functional interface using Lamda expressions in java 8.

  1. package com.instanceofjava.java8;
  2. /**
  3.  * @author www.Instanceofjava.com
  4.  * @category interview programming questions
  5.  * 
  6.  * Description: java 8 Lamda expressions
  7.  *
  8.  */
  9. public class LamdaExpressions {

  10. public static void main(String[] args) {
  11. FunctionalInterfaceExample obj = ()->{
  12. System.out.println("hello world");
  13. };

  14. obj.show();
  15. }

  16. }

Output:

  1. hello world

Instance Of Java

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