FilePermission類的getActions()方法 (FilePermission Class getActions() method)

• getActions() method is available in java.io package.

  getActions()方法在java.io包中可用。

• getActions() method is used to check whether this FilePermission and the given object are equal or not in terms of pathname and actions like read, write, delete, execute, delete, etc.

  getActions()方法用于檢查此FilePermission和給定對象在路徑名和諸如讀取，寫入，刪除，執行，刪除等操作方面是否相等。

• getActions() 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.

  getActions()方法是一種非靜態方法，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。

• getActions() method does not throw an exception at the time of getting actions.

  getActions()方法在獲取操作時不會引發異常。

Syntax:

句法：

    public String getActions();

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 String, it returns the canonical (some authorised) denotations of the actions.

方法的返回類型為String ，它返回動作的規范(某些經授權)表示。

Example:

例：

// Java program to demonstrate the example 
// of String getActions() method 
// of FilePermission
import java.io.*;
public class GetActionsOfFP {
public static void main(String[] args) throws Exception {
FilePermission fp1 = null;
FilePermission fp2 = null;
try {
// Instantiates FilePermission fp1 , fp2 
fp1 = new FilePermission("D:\\includehelp.txt", "read");
fp2 = new FilePermission("D:\\includehelp.txt", "write");
// By using getActions() method is to return
// the action performed on the file of the 
// FilePermission
String action = fp1.getActions();
System.out.println("fp1.getActions(): " + action);
action = fp2.getActions();
System.out.println("fp2.getActions(): " + action);
} catch (Exception ex) {
System.out.println(ex.toString());
}
}
}

Output

輸出量

fp1.getActions(): read
fp2.getActions(): write

翻譯自: https://www.includehelp.com/java/filepermission-getactions-method-with-example.aspx