[Java] Lambda expression

About lambda expression

--An expression that can treat a method like a variable.

syntax ** (variable) = (method argument)-> {processing content} **

--The description of anonymous class can be described as a function type. -[Java] Anonymous class The anonymous class explained in is simpler and can be described in one line. --Please check while looking at the sample.


//Anonymous class, interface used in lambda expressions
interface I_Hello {
  public void print();

//Calling class
public class Sample {
	public static void main(String[] args) {
		//How to write an anonymous class
		I_Hello p = new I_Hello() {
			public void print() {
				System.out.println("Hello World");

		//How to write a lambda expression
		I_Hello p2 = () -> { System.out.println("Hello World2"); };

Hello World
Hello World2

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