import java.util.Iterator;
import java.util.Map;
import java.util.Set;
class SimpleMapProgram{
public static void main(String[] args){
//creating the map object of key as integer and value as String type
Map<Integer,String> map=new HashMap<Integer,String>();
//adding the element into map there is put() method in java for adding the element into the Map
map.put(1,"Core Java");//1 st element added into the HashMap
map.put(2,"Adv Java");//2 st element added into the HashMap
map.put(3,"Spring");//3 st element added into the HashMap
map.put(4,""Hibernate);//4 st element added into the HashMap
map.put(5,"Struts");//5 st element added into the HashMap
//retriving the element from the Hashmap
//first the give set type object for getting the all keys of the HashMap
Set keyset=map.keySet();
//here getting the Iterator object for retriving the hashmap object
Iterator<Integer> it=keyset.iterator();
System.out.println("HashMap Element Are As Follow");
while(it.hasNext()){
//getting the key
int key=it.next();
//getting the value of the element by passing the key as argument to the get method
String value=map.get(key);
//printing the key and value of the object
System.out.println(key+"-----------"+value);
} //while loop closed
}//main method close
}//class close
