The isEmpty() method of List interface 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.
Syntax:
boolean isEmpty()
Parameter: It does not accepts any parameter.
Returns: It returns True if the list 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 List interface  import java.util.*;  public class GFG {    public static void main(String[] args)    {        // creating an Empty Integer List        List<Integer> arr = new ArrayList<Integer>(10);          // check if the list is empty or not        // using isEmpty() function        boolean ans = arr.isEmpty();        if (ans == true)            System.out.println("The List is empty");        else            System.out.println("The List is not empty");          // addition of a element to        // the List        arr.add(1);          // check if the list is empty or not        // after adding an element        ans = arr.isEmpty();        if (ans == true)            System.out.println("The List is empty");        else            System.out.println("The List is not empty");    }} |
Output:
The List is empty The List is not empty
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/List.html#isEmpty()
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