/**
 *  ====================================================================
 *  TestHashMap.java. This program demonstrates the use of a map with
 *  key type String and value type Employee.
 * 
 *  Author: Cay Horstmann.
 *  Modified by: Mark Austin
 *  ====================================================================
 */

import java.util.*;

public class TestHashMap {
   public static void main(String[] args) {

      // Create and populate the hash map ....

      Map<String, Employee> staff = new HashMap<String, Employee>();

      staff.put("144-25-5464", new Employee("Amy Lee"));
      staff.put("567-24-2546", new Employee("Harry Hacker"));
      staff.put("157-62-7935", new Employee("Gary Cooper"));
      staff.put("456-62-5527", new Employee("Francesca Cruz"));

      // Print all entries

      System.out.println("Print all entries in the HashMap as a set");
      System.out.println("=========================================");

      System.out.println(staff);

      // Remove an entry

      System.out.println("Remove entry with id = 567-24-2546");
      staff.remove("567-24-2546");

      // Replace an entry

      System.out.println("Replace entry with id = 456-62-5527");
      staff.put("456-62-5527", new Employee("Francesca Miller"));

      // Look up a value

      System.out.println("Find employee with id 157-62-7935");
      System.out.println("=================================");

      System.out.println( staff.get("157-62-7935") );

      // Iterate through all entries

      System.out.println("Iterate over the Hashmap Entries ");
      System.out.println("=================================");

      for (Map.Entry<String, Employee> entry : staff.entrySet()) {
         String key     = entry.getKey();
         Employee value = entry.getValue();
         System.out.println("key = " + key + ", value = " + value);
      }

      System.out.println("=================================");
   }
}