//單例模式實現讀取***.properties檔案的內容
public class OVLoadProperties {
    // 宣告一個自己的例項
    private static OVLoadProperties instance = new OVLoadProperties();
    final static String fileName = "/messages_zh_CN.properties";
    // 返回該例項
    public static synchronized OVLoadProperties getInstance() {
        return instance;
    }
    // 獲取key所對應的值
 

    public String getProperties(String key) {
        Properties p = new Properties();
        InputStream is = null;
        try {
            // ***.properties檔案放在src目錄的下邊
            is = OVLoadProperties.class.getResourceAsStream(fileName);
            if (is == null)
                is = new FileInputStream(fileName);
            p.load(is
 
);
        } catch (Exception e) {
            System.out.println("載入檔案出錯啦!" + e.getMessage());
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    System.out
 
.println(e.getMessage());
                }
            }
        }
        return p.getProperty(key);
    }
}