Java Utility Library

Java ArrayList - isEmpty() Method

The java.util.ArrayList.isEmpty() method is used to check whether the ArrayList is empty or not. It returns true if the size of the ArrayList is zero, else returns false.

Syntax

public boolean isEmpty()

Parameters

No parameter is required.

Return Value

true if the ArrayList is empty, else returns false.

Exception

Example:

In the example below, the java.util.ArrayList.isEmpty() method is used to check whether the ArrayList is empty or not.

import java.util.*;

public class MyClass {
  public static void main(String[] args) {
    //creating an ArrayList
    ArrayList<Integer> MyList = new ArrayList<Integer>();

    //checking ArrayList
    System.out.println("Is MyList empty?: " + MyList.isEmpty());

    //populating ArrayList
    MyList.add(10);
    MyList.add(20);
    MyList.add(30);

    //checking ArrayList
    System.out.println("Is MyList empty?: " + MyList.isEmpty());
  }
}

The output of the above code will be:

Is MyList empty?: true
Is MyList empty?: false

❮ Java.util - ArrayList