Insert and Retrieve Values from a Map (HashMap)

• Insert values into HashMap
• Retrieve values from HashMap

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

/**
*
* @author JSupport
* http://javasrilankansupport.blogspot.com
*
*/

public class InsertRetrieveDataFromMap {

// get values from HashMap
public static void getHashMapData(Map order_details){
Set key_set;

// gat all key to Set
key_set     =   order_details.keySet();

for (Iterator it = key_set.iterator(); it.hasNext();) {

String key      =   (String) it.next();
String  value   =   (String) order_details.get(key);

System.out.println("Map key : "+key +"\tKey Value : "+key);
}

}
public static void main(String[] args) {

HashMap order_details   =   new HashMap();

//     add key value pairs to HashMap

order_details.put("kitchName", "Chinese Kitchen");
order_details.put("waiterName", "Silva");
order_details.put("tableName", "20");

getHashMapData(order_details);
}
}

This program dose answer to following....

• How to Insert values into HashMap in Java
• How to Insert values into HashMap in Java
• How to Retrieve values from HashMap in Java
• How to Retrieve values from Map in Java