FilePermission类的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()方法用于检查此FilePermission和给定对象在路径名和诸如读取，写入，删除，执行，删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()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

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

  getActions()方法在获取操作时不会引发异常。

Syntax:

句法：

    public String getActions();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of the method is String, it returns the canonical (some authorised) denotations of the actions.

方法的返回类型为String ，它返回动作的规范(某些经授权)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

输出量

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

翻译自: https://www.includehelp.com/java/filepermission-getactions-method-with-example.aspx