Java Hashmap Replace Elements
import java.util.*;
public class hashmapeg3{
public static void main(String args[]){
HashMap<Integer,String> map=new HashMap<Integer,String>();//Creating HashMap
map.put(1,"Cat"); //Put elements in Map
map.put(2,"Dog");
map.put(3,"Markhor");
map.put(4,"Peacock");
System.out.println("HashMap after put(): ");
for(Map.Entry m : map.entrySet()){
System.out.println(m.getKey()+" "+m.getValue());
}
// change element with key 2
map.replace(2, "Wolf");
System.out.println("HashMap using replace(): ");
for(Map.Entry m : map.entrySet()){
System.out.println(m.getKey()+" "+m.getValue());
}
}
}