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Java 8 lambda expression multiple parameters


Lambda expression is used to provide the implementation of functional interface. A Functional Interface is an interface with only single abstract method. In case of lambda expression, we don’t need to define the method again for providing the implementation so it saves lots of coding efforts.

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.codesjava;
 
@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


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