Map类型

import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Set;public class MapExample {public static void main(String[] args) {Map<Object, String> mp = new HashMap<Object, String>();// adding or set elements in Map by put method key and value pairmp.put(new Integer(2), "Two");mp.put(new Integer(1), "One");mp.put(new Integer(3), "Three");mp.put(new Integer(4), "Four");// Get Map in Set interface to get key and valueSet s = mp.entrySet();// Move next key and value of Map by iteratorIterator it = s.iterator();while (it.hasNext()) {// key=value separator this by Map.Entry to get key and valueMap.Entry m = (Map.Entry) it.next();// getKey is used to get key of Mapint key = (Integer) m.getKey();// getValue is used to get value of key in MapString value = (String) m.getValue();System.out.println("Key :" + key + "  Value :" + value);}}}

原文：http://www.easywayserver.com/blog/java-map-example/

参考：http://188029.net/java/j12-06-16.html