ArrayList isEmpty() in Java with example

The isEmpty() method of ArrayList in java is used to check if a list is empty or not. It returns true if the list contains no elements otherwise it returns false if the list contains any element.



Parameter: It does not accepts any parameter.

Returns: It returns True if the list list_name has no elements else it returns false. The return type is of datatype boolean.

Error and Exceptions: This method has no error or exceptions.

Program to demonstrate working of isEmpty() in Java:





// Java code to demonstrate the working of
// isEmpty() method in ArrayList
// for ArrayList functions
import java.util.ArrayList;
public class GFG {
    public static void main(String[] args)
        // creating an Empty Integer ArrayList
        ArrayList<Integer> arr = new ArrayList<Integer>(10);
        // check if the list is empty or not using function
        boolean ans = arr.isEmpty();
        if (ans == true)
            System.out.println("The ArrayList is empty");
            System.out.println("The ArrayList is not empty");
        // addition of a element to the ArrayList
        // check if the list is empty or not
        ans = arr.isEmpty();
        if (ans == true)
            System.out.println("The ArrayList is empty");
            System.out.println("The ArrayList is not empty");



The ArrayList is empty
The ArrayList is not empty

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