JAVA

Map put() method

Map<String, String> map = new HashMap<String, String>();  // Make an empty map

  map.put("es", "Spain");  // Add the key/value pairs
  map.put("us", "United States");
  map.put("zw", "Zimbabwe");

map.put in java

import java.util.*;
public HashMap{
    public static void main(String[] args){
        Map<Integer, String> map = new HashMap<>();//initialization of HashMap 
        map.put(key, value);//key and value must be entered
        System.out.println(map);
    }
}