HashMap

import java.util.HashMap;
import java.util.Map;


// HASH MAP
// Value can be set using KEY and VALUE pairs
//

public class ClassHasMap {

public static void main(String[] args) {

System.out.println("\n-----------Using String----------");
Map<String , String> map = new HashMap<>();
map.put("KEY_1", "value Of key one");
map.put("KEY_2", "Value of key 2");

System.out.println(map.get("KEY_1"));

System.out.println("\n-----------Using INTEGER----------");

Map<Integer,  String> map2 = new HashMap<Integer, String>();
map2.put(1, "value Of key one");
map2.put(2, "Value of key 2");

System.out.println(map2.get(1));

System.out.println("\n-----------Using ITERATION----------");
Map<String , String> map3 = new HashMap<>();
map3.put("KEY_1", "value Of key one");
map3.put("KEY_2", "Value of key 2");

for(Object k: map3.keySet()){
System.out.println(k + " "+ map3.get(k));
}
}
}