Map的遍历 1.4 和1.5

jdk 1.4 版本遍历Map方法

  	Map menuMap = new LinkedHashMap();
  	Iterator iterator = menuMap.keySet().iterator();
  	while (iterator.hasNext()) 
  	{
   	String key = (String) iterator.next();
   	FrontMenuShowBean menu = (FrontMenuShowBean) menuMap.get(key);
  	}		

jdk 1.5 以上遍历Map方法

	Map<String, UserInfo> userinfo = new HashMap<String, UserInfo>();
	for(Map.Entry<String, UserInfo> entry:userinfo.entrySet())
	{
		entry.getValue().getUserId();
		entry.getValue().getUserName();
	}