有什麼可能的方式來存儲這些數據？

Question

嗯，我需要至少兩班使用這樣的數據：

String navHome = "home"; 
    String navAbout = "about"; 
    String navUpload = "upload"; 
    String navUploadProc = "uploadProc"; 
    String navStartUpload = "startUpload"; 
    String navContact = "contact"; 
    String navSearch = "search"; 
    String navManual = "manual"; 
    String navBackToGmis = "backToGmis"; 

我想的只是粘貼到這一點其他類，但隨後它違反規劃的原則，因爲它重複同樣的事情。文本和XML文件不適合存儲數據，繼承不是一種選擇，因爲Java不支持多重繼承......任何想法？

是的，我知道它聽起來會對大多數人遲鈍，但我需要在這方面提示。

Answer 1

如果這些是常數，那麼您可以在一個類（或接口）宣佈他們和其他使用它們：

A.java：

public class A { 
    public static final String navHome = "home"; 
    public static final String navAbout = "about"; 
    public static final String navUpload = "upload"; 
    public static final String navUploadProc = "uploadProc"; 
    public static final String navStartUpload = "startUpload"; 
    public static final String navContact = "contact"; 
    public static final String navSearch = "search"; 
    public static final String navManual = "manual"; 
    public static final String navBackToGmis = "backToGmis"; 

    . . . 
} 

B.java：

import static A.*; // or list each String in a separate import 

public class B { 
    . . . // code can use nav* as if they were declared in class B 
}