Lambda expression is used to provide the implementation of functional interface.
Java Lambda Expression Syntax
(argument-list) -> {function-body}
Where:
Argument-list: It can be empty or non-empty as well.
Arrow notation/lambda notation: It is used to link arguments-list and body of expression.
Function-body: It contains expressions and statements for lambda expression.
Example
package com.w3schools;
@FunctionalInterface
interface AddInterface{
void add(int a, int b);
}
public class LambdaExpressionExample {
public static void main(String args[]){
//Using lambda expressions
AddInterface addInterface=(a, b)->{
System.out.println(a + b);
};
addInterface.add(10, 20);
}
}
Output
30