Check ArrayList Empty Java

Java ArrayList isEmpty()

The Java ArrayList isEmpty() method checks if the arraylist is empty.

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Java ArrayList isEmpty()
isEmpty() Parameters
isEmpty() Return Value
Example: Check if ArrayList is Empty
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The syntax of the isEmpty() method is:

arraylist.isEmpty()

Here, arraylist is an object of the ArrayList class.

isEmpty() Parameters

The isEmpty() method does not take any parameters.

isEmpty() Return Value

returns true if the arraylist does not contain any elements
returns false if the arraylist contains some elements

Example: Check if ArrayList is Empty

import java.util.ArrayList; class Main { public static void main(String[] args) { // create an ArrayList ArrayList languages = new ArrayList<>(); System.out.println("Newly Created ArrayList: " + languages); // checks if the ArrayList has any element boolean result = languages.isEmpty(); // true System.out.println("Is the ArrayList empty? " + result); // add some elements to the ArrayList languages.add("Python"); languages.add("Java"); System.out.println("Updated ArrayList: " + languages); // checks if the ArrayList is empty result = languages.isEmpty(); // false System.out.println("Is the ArrayList empty? " + result); } }

Output

Newly Created ArrayList: [] Is the ArrayList empty? true Updated ArrayList: [Python, Java] Is the ArrayList empty? false

In the above example, we have created a arraylist named languages. Here, we have used the isEmpty() method to check whether the arraylist contains any elements or not.

Initially, the newly created arraylist does not contain any element. Hence, isEmpty() returns true. However, after adding some elements (Python, Java), the method returns false.

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Check ArrayList Empty Java

Java ArrayList isEmpty()

isEmpty() Parameters

isEmpty() Return Value

Example: Check if ArrayList is Empty

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