Question

How to get HashMap size in Java

Answer 1

import java.util.HashMap;
 
public class MyClass {
    public static void main(String args[]) {
        HashMap<String, Integer> hashmap = new HashMap<>();
 
        hashmap.put("java", 1);
        hashmap.put("c", 2);
        hashmap.put("c++", 3);
        hashmap.put("python", 4);
        hashmap.put("swift", 5);
 
        System.out.println(hashmap.size());
    }
}
 
 
 
/*
run:
 
5
 
*/

 

70+ SQL courses for beginners and professionals