import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
public class HashMapSize {
public static void main(String[] args) {
//Creating HashMap;
Map<Integer, String> hm = new HashMap<>();
//Putting element
hm.put(1, "Naidu");
hm.put(3, "Rohilla");
hm.put(5, "Vijay");
hm.put(2, "Rahul");
hm.put(4, "Ramakesh");
hm.put(6, "Sudeep");
hm.putIfAbsent(7, "Badrabahu");
System.out.println(hm.size());
}
}
