Let’s learn ArrayList isEmpty() method in java.
ArrayList isEmpty() method in java
isEmpty() method of ArrayList class returns true if this list contains no elements.
Syntax:
ArrayList.isEmpty()
Parameter:
this method does not accept any parameter.
Throws:
this method does not have any exceptions.
Now let’s see example on ArrayList isEmpty() method.
import java.util.ArrayList; public class ArrayListIsEmptyMethodExample { public static void main(String[] args) { ArrayList<Integer> al = new ArrayList<Integer>(); // before checking ArrayList using isEmpty() method System.out.println("Is ArrayList empty: " + al.isEmpty()); al.add(86); al.add(25); al.add(53); al.add(85); // after checking ArrayList using isEmpty() method System.out.println("Is ArrayList empty: " + al.isEmpty()); for(Integer num : al) { System.out.println(num); } } }
Output:
Is ArrayList empty: true
Is ArrayList empty: false
86
25
53
85
Also read – constructor in java