We would like to know how to get to know three lambda creation body type syntax.
/*from w w w . jav a 2 s . c o m*/ public class Main { public static void main(String[] args) { // No need ( ) and return MyCalculator myCalculator = (Integer s1) -> s1 * 2; System.out.println("1- Result x2 : " + myCalculator.calcIt(5)); // No need return myCalculator = (Integer s1) -> (s1 * 2); System.out.println("2- Result x2 : " + myCalculator.calcIt(5)); // Need {} and "return" and ; myCalculator = (Integer s1) -> { return s1 * 2; }; System.out.println("3- Result x2 : " + myCalculator.calcIt(6)); } } interface MyCalculator { public Integer calcIt(Integer s1); }
The code above generates the following result.