Home » Java programming language

Java ArrayList size() Method with Example

ArrayList Class size() method: Here, we are going to learn about the size() method of ArrayList Class with its syntax and example.
Submitted by Preeti Jain, on January 18, 2020

ArrayList Class size() method

  • size() method is available in java.util package.
  • size() method is used to return the size (i.e. no. of elements stored) in this Arraylist.
  • size() method is a non-static method so it is accessible with the class object and if we try to access the method with the class name then we will get an error.
  • size() method does not throw an exception at the time of returning the size of this Arraylist.


     public int size();


  • It does not accept any parameter.

Return value:

In the first case, the return type of the method is int, it returns the size of this Arraylist.


// Java program to demonstrate the example 
// of int size() method of ArrayList

import java.util.*;

public class SizeOfArrayList {
    public static void main(String[] args) {
        // Create an ArrayList with initial 
        // capacity of storing elements

        ArrayList arr_l = new ArrayList(10);

        // By using add() method is to add 
        // elements in this ArrayList

        // Display ArrayList
        System.out.println("ArrayList Elements :" + arr_l);

        int size = arr_l.size();

        // Display ArrayList Size
        System.out.println("arr_l.size() : " + size);


ArrayList Elements :[C, C++, JAVA, DOTNET, PHP]
arr_l.size() : 5

Comments and Discussions

Ad: Are you a blogger? Join our Blogging forum.

Languages: » C » C++ » C++ STL » Java » Data Structure » C#.Net » Android » Kotlin » SQL
Web Technologies: » PHP » Python » JavaScript » CSS » Ajax » Node.js » Web programming/HTML
Solved programs: » C » C++ » DS » Java » C#
Aptitude que. & ans.: » C » C++ » Java » DBMS
Interview que. & ans.: » C » Embedded C » Java » SEO » HR
CS Subjects: » CS Basics » O.S. » Networks » DBMS » Embedded Systems » Cloud Computing
» Machine learning » CS Organizations » Linux » DOS
More: » Articles » Puzzles » News/Updates

© https://www.includehelp.com some rights reserved.