Difference between Length of Array and Size of ArrayList in Java

by Online Tutorials Library July 22, 2022

Difference between length of array and size() of ArrayList in Java

ArrayList doesn’t have length() method, the size() method of ArrayList provides the number of objects available in the collection.

Array has length property which provides the length or capacity of the Array. It is the total space allocated during the intialization of the array.

 import java.util.ArrayList; public class LengthVsSize { public static void main(String[] args) { //creating array of 10 elements int arr[]=new int[10]; //storing 2 elements arr[0]=10; arr[1]=12; //printing length of array System.out.println(arr.length);//10  //Creating ArrayList ArrayList list=new ArrayList(); //storing 2 elements list.add(“ankit”); list.add(“nippun”); //printing size of ArrayList System.out.println(list.size());//2 } } 

Output:

10 2

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