The isEmpty() method of java.util.ArrayList class is used to check whether the list is empty or not. This method returns a boolean value. It returns true if the list is empty, and false if the list contains any elements.

January 12, 2023 - Learn to check if an ArrayList is empty using isEmpty() and size() methods. Note isEmpty() method internally checks the size of the list.

Java Platform: Java SE 8 · Syntax: isEmpty() Return Value: Returns true if a ArrayList object contains no elements; false otherwise. Return Value Type: boolean · Pictorial presentation of ArrayList.isEmpty() Method · Example: ArrayList.isEmpty ...

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July 11, 2025 - Example 1: Here, we use the isEmpty() method to check whether an ArrayList of integers is empty. ... // Java program to demonstrate the use of isEmpty() // method with ArrayList of Integers import java.util.ArrayList; public class GFG { public static void main(String[] args) { // Creating an empty ArrayList of Integers ArrayList<Integer> n = new ArrayList<>(); // Checking if the ArrayList is empty boolean res = n.isEmpty(); System.out.println("" + res); // Adding an element // to the ArrayList n.add(21); // Checking again if the // ArrayList is empty res = n.isEmpty(); System.out.println("" + res); } }

September 1, 2008 - The Java ArrayList isEmpty() method returns true if this list contains no elements. This method always returns the result as per the current state of the list.

March 10, 2024 - The .isEmpty() function checks if a given ArrayList is empty. It returns true if the ArrayList is empty and false if it is not empty. ... Looking for an introduction to the theory behind programming?

November 5, 2024 - The isEmpty() method in Java's ArrayList class is a straightforward tool to check if the list contains no elements. It returns true if the list is empty; otherwise, it returns false.

import java.util.ArrayList; class Main { public static void main(String[] args) { // create an ArrayList ArrayList<String> 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?

December 3, 2024 - // Java Program Implementing // List isEmpty() Method import java.util.List; import java.util.ArrayList; public class Main { public static void main(String[] args) { // Creating Empty ArrayList List<Integer> arr = new ArrayList<Integer>(); // Demonstrating isEmpty() Method System.out.print(arr + " : "); System.out.println(arr.isEmpty()); arr.add(1); arr.add(2); arr.add(3); // Demonstrating isEmpty() Method System.out.print(arr + " : "); System.out.println(arr.isEmpty()); } } Output ·

The ArrayList.isEmpty() method in Java is used to check if a list is empty. An empty list means that it contains no elements.

October 20, 2025 - This class is a member of the Java Collections Framework. ... Constructs an empty list with the specified initial capacity. ... Constructs an empty list with an initial capacity of ten. ... Constructs a list containing the elements of the specified collection, in the order they are returned ...

This is a common task in programming, and isEmpty() provides a clear and efficient way to do it. First, let's create a new Java file named ListCheck.java in your ~/project directory. You can do this by right-clicking in the File Explorer on the left and selecting "New File", then typing ListCheck.java. Now, open ListCheck.java in the editor and add the following code: import java.util.ArrayList; import java.util.List; public class ListCheck { public static void main(String[] args) { // Create an empty list List<String> emptyList = new ArrayList<>(); // Create a list with elements List<String> populatedList = new ArrayList<>(); populatedList.add("Apple"); populatedList.add("Banana"); // Check if the lists are empty using isEmpty() System.out.println("Is emptyList empty?

public class test { public static void main(String[] args) { // Create an empty ArrayList. ArrayList myArrayList = new ArrayList(); // Test whether the array is empty or not. if (myArrayList.isEmpty()) { System.out.println("The ArrayList is empty"); } else { System.out.println("The ArrayList is not empty"); } } }

public boolean isEmpty(); Parameter(s): It does not accept any parameter. Return value: The return type of this method is boolean, it returns true when this Arraylist is "empty" otherwise it returns false when this Arraylist is "non-empty". Example: // Java program to demonstrate the example ...

Here is an example of how the isEmpty() method can be used: import java.util.ArrayList; import java.util.List; public class Main { public static void main(String[] args) { // Create an empty list List<String> list = new ArrayList<>(); // Check if the list is empty if (list.isEmpty()) { System.out.println("The list is empty"); } else { System.out.println("The list is not empty"); } } }

June 11, 2024 - The isEmpty method can be used in conditional statements to execute code only if the list is empty or not empty. import java.util.ArrayList; import java.util.List; public class IsEmptyConditionalExample { public static void main(String[] args) ...

June 23, 2024 - This means that isEmpty() can be used with any type of collection, such as List, Queue, and Map (through its key, value, or entry set). import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; public class CollectionIsEmptyExample { public static void main(String[] args) { List<String> list = new ArrayList<>(); Set<String> set = new HashSet<>(); // Checking if list is empty if (list.isEmpty()) { System.out.println("The list is empty."); } // Checking if set is empty if (set.isEmpty()) { System.out.println("The set is empty."); } // Adding elements list.add("Element1"); set.add("Element1"); // Check again if (!list.isEmpty()) { System.out.println("The list is not empty."); } if (!set.isEmpty()) { System.out.println("The set is not empty."); } } } Output: The list is empty.