Java FilePermission(String path, String actions)建構函式範例

FilePermission.FilePermission(String path，String actions)建構函式具有以下語法。

public FilePermission(String path, String actions)

範例

在下面的程式碼中展示了如何使用FilePermission.FilePermission(String path，String actions)建構函式。

import java.io.FilePermission;
import java.io.IOException;
import java.security.PermissionCollection;

public class Main {

  public static void main(String[] args) throws IOException {

    // create new file permissions 
    FilePermission  fp = new FilePermission("C://test.txt", "read");

    // create new permission collection
    PermissionCollection  pc = fp.newPermissionCollection();

    // add permission to the permission collection
    pc.add(fp);// From: W WW.Y  i I BA I . C o  M

    if (pc.implies(new FilePermission("C://test.txt", "read"))) {
      System.out.println("Permission for C://test.txt is read");
    }
  }
}

上面的程式碼生成以下結果。

Permission for C://test.txt is read