Java中定義Map常量，List常量

一般的方式的使用靜態代碼塊。比如：

public final static Map map = new HashMap();    
static {    
    map.put("key1", "value1");    
    map.put("key2", "value2");    
} 

下麵為一種簡單定義Map常量的方式

public final static Map<String, Fragment> NAV_ITEM_ADPTER = new HashMap<String, Fragment>() {  
    {  
        put("拍錄傳", new CameraFragment());  
        put("集群對講", new GroupTalkFragment());  
        put("視通", new VideoCallFragment());  
        put("位置", new PositionFragment());  
        put("瀏覽", new BrowseFragment());  
        put("消息", new MsgFragment());  
        put("群組", new GroupFragment());  
        put("設置", null);  
        put("退出", null);  
    }  
};  

List的話則可以這樣定義：

public final static List<String> LIST = Arrays.asList("one","two","three");