ArrayList

ArrayList size example

Photo of Ilias TsagklisIlias TsagklisNovember 11th, 2012Last Updated: June 9th, 2013
0 82 1 minute read

In this example we shall show you how to get the ArrayList size, that is the number of elements that the ArrayList contains. To get the ArrayList size one should perform the following steps:

  • Create a newArrayList.
  • Populate the arrayList with elements, usingadd(E e) API method of ArrayList.
  • Use thesize() API method of ArrayList. The method returns the int number of elements that the arrayList contains,

as described in the code snippet below.
 

package com.javacodegeeks.snippets.core;import java.util.ArrayList; public class GetSizeOfArrayList {   public static void main(String[] args) {    // Create an ArrayList and populate it with elements    ArrayList arrayList = new ArrayList();    arrayList.add("element_1");    arrayList.add("element_2");    arrayList.add("element_3");     int elementsCount = arrayList.size();     System.out.println("Elements in Array :");    for(int i=0; i < elementsCount; i++)System.out.println(arrayList.get(i));   }}

Output:

Elements in Array :element_1element_2element_3

 
This was an example of how to get the ArrayList size in Java.

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Photo of Ilias TsagklisIlias TsagklisNovember 11th, 2012Last Updated: June 9th, 2013
0 82 1 minute read
Photo of Ilias Tsagklis

Ilias Tsagklis

Ilias is a software developer turned online entrepreneur. He is co-founder and Executive Editor atJava Code Geeks.
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