HashMap isEmpty() in Java

isEmpty(): This method is available in java.util.HashMap class of Java.

Syntax:

boolean java.util.HashMap.isEmpty()

This method returns true if this map contains no key-value mappings.

Parameters: NA

Returns: true if this map contains no key-value mappings.

Exceptions: NA

Approach

Java

import java.util.HashMap;

public class HashMapisEmpty {
    public static void main(String[] args) {
        HashMap<String, Integer> hashMap = 
                new HashMap<String, Integer>();

        hashMap.put("Hello", 1);
        hashMap.put("World", 2);

        System.out.println(hashMap.isEmpty());

    }
}

Output:

false