how to an ArrayList in java

/**
 * @author lautturi.com
 * Java example:Creating an ArrayList in java
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		// create an Integer type arraylist
		ArrayList<Integer> intArrList = new ArrayList<>();

		// create a String type arraylist
		ArrayList<String> strArrList = new ArrayList<>();
		
		// add new elements to the array list in java
		strArrList.add("lautturi");
		strArrList.add("java");
		strArrList.add("python");
		strArrList.add("hello");
		System.out.println(strArrList);

	}
}

output:

[lautturi, java, python, hello]