# forEach method (for Collections)

Paul Tomoiu

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Examples,

Java 8,

Collections

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Published 2022-12-03

This tutorial explains to you how to use forEach method in Java (for Collections). We have an example for you as well.

Before Java 8 this feature wasn't available.

Please take a look at the following example and read carefully the comments. The code is self-explanatory.

This example is created from a simple Spring Boot application created with Spring Initializr. I am using Maven, Java 17, Spring Boot 3.1.0.

From the base application downloaded from Spring Initializr, I updated the main class as below:

DemoApplication.java
package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import java.util.ArrayList;

@SpringBootApplication
public class DemoApplication {

	public static void main(String[] args) {

		SpringApplication.run(DemoApplication.class, args);

		//Create and define a Collection (List)
		ArrayList<String> carList = new ArrayList<>();

		// safe to use with multiple threads
		carList.add("Audi");
		carList.add("Renault");
		carList.add("Peugeot");
		carList.add("Dacia");

		for (String c : carList) {
			System.out.println("car= " + c);
		}
		
		// This is forEach method usage
		carList.forEach( x-> {
			System.out.println("forEach/ car= " + x);
		});

	}
}

Info

As you can see "forEach" method is easy to use, and it is very useful.
This method is added to the Iterable interface, so automatically to List, Set, Queue interfaces.