ArrayList size example (original) (raw)

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 new ArrayList.
• Populate the arrayList with elements, using add(E e) API method of ArrayList.
• Use the size() 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_1 element_2 element_3

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

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

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