Sample code on how to set the value in a HashMap and retrieve it back

Try out these two programs.... 

(2a)

package pack1;

import java.io.*;

import java.util.*;

import pack1.Employee;

public class HashMapTest {

      public static void main(String[] args) {

            int i = 0;

            String j = i + "";     

            HashMap hashmap = new HashMap();

            i++;

            for(i=1;i<=3;i++)

            {

                  j = i+"A";

                  hashmap.put(i, new Employee(i,j));

            }

            Iterator it = hashmap.keySet().iterator();

            while(it.hasNext())

            {

                  int s1 = (Integer)it.next();

                  Employee e1 = (Employee)hashmap.get(s1);

                  System.out.println("For the Integer Reference " + e1.getIntegerRef() + " the Name Reference is " + e1.getNameDef());

                  //System.out.println("Get the Integer Reference " + e1.getIntegerRef());

                  //System.out.println("Get the Name Reference " + e1.getNameDef());

            }

      }

}

(2b)

package pack1;

import java.util.*;

import java.io.*;

class Employee

{

      private int integerRef = 0;

      private String nameDef = "";

      public Employee(int integerRef, String nameDef)

      {

            this.integerRef = integerRef;

            this.nameDef = nameDef;

      }

      public int getIntegerRef()

      {

            return integerRef;

      }

      public String getNameDef()

      {

            return nameDef;

      }

}