ListResourceBundle類的getContents()方法 (ListResourceBundle Class getContents() method)

• getContents() method is available in java.util package.

  getContents()方法在java.util包中可用。

• getContents() method is used to return an enumeration of all the keys that exist in this ListResourceBundle and its superclass.

  getContents()方法用于返回此ListResourceBundle及其超類中存在的所有鍵的枚舉。

• getContents() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  getContents()方法是一個非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• getContents() method does not throw an exception at the time of returning an enumeration of elements.

  在返回元素枚舉時， getContents()方法不會引發異常。

Syntax:

句法：

public Enumeration getKeys();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

The return type of the method is Enumeration, it gets an Enumeration of all the existing keys in this ListResourceBundle and its super bundle.

該方法的返回類型為Enumeration ，它獲取此ListResourceBundle及其超級捆綁包中所有現有鍵的Enumeration。

Example:

例：

// Java program to demonstrate the example // of Enumeration getKeys() method of // ListResourceBundle import java.util.*;// Instantiates a class that extends // ListResourceBundle class GetKey extends ListResourceBundle {// By using getContent() method is to// get the contents in the form of // 2D objectsprotected Object[][] getContents() {return new Object[][] {{"10","C"}, {"20","C++"}, {"30","JAVA"}, {"40","SFDC"}, {"50","PHP"}};} }public class Main {public static void main(String[] args) {// Instantiates an object of// GetKeysGetKey get_c = new GetKey();// By using getKeys() method is // return all the keys in the // form of an EnumerationSystem.out.println("get_c.getKeys(): ");for (Enumeration en = get_c.getKeys(); en.hasMoreElements();)System.out.println(en.nextElement());} }

Output

輸出量

get_c.getKeys(): 50 40 30 20 10

翻譯自: https://www.includehelp.com/java/listresourcebundle-getkeys-method-with-example.aspx

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