Program: Basic ArrayList Operations.

Here we can see example for basic ArrayList operations like creating object for ArrayList, adding objects into ArrayList, accessing objects based on index, searching an object in ArrayList whether it is listed under this instance or not, adding elements at specific index, checking whether the ArrayList is empty or not, getting object index, and finally size of the ArrayList.

package com.java2novice.arraylist;

import java.util.ArrayList;

public class MyBasicArrayList {

	public static void main(String[] a){
		
		ArrayList<String> al = new ArrayList<String>();
		//add elements to the ArrayList
		al.add("JAVA");
		al.add("C++");
		al.add("PERL");
		al.add("PHP");
		System.out.println(al);
		//get elements by index
		System.out.println("Element at index 1: "+al.get(1));
		System.out.println("Does list contains JAVA? "+al.contains("JAVA"));
		//add elements at a specific index
		al.add(2,"PLAY");
		System.out.println(al);
		System.out.println("Is arraylist empty? "+al.isEmpty());
		System.out.println("Index of PERL is "+al.indexOf("PERL"));
		System.out.println("Size of the arraylist is: "+al.size());
	}
}

[JAVA, C++, PERL, PHP]
Element at index 1: C++
Does list contains JAVA? true
[JAVA, C++, PLAY, PERL, PHP]
Is arraylist empty? false
Index of PERL is 3
Size of the arraylist is: 5