java.util.PropertyPermission.implies(Permission p) 如果這PropertyPermission暗示指定的權限方法檢查。這是通過檢查PropertyPermission對象，對動作p是該對象的動作子集，如果這個對象的名字所暗示p的操作。

聲明

以下是java.util.PropertyPermission.implies()方法的聲明

public boolean implies(Permission p)

參數

• p -- 檢查的權限對象。

返回值

如果此對象暗示指定的權限，此方法返回true。

異常

NA

例子

下麵的示例演示java.util.PropertyPermission.implies(Permission)方法的用法。

package com.yiibai;

import java.util.PropertyPermission;

public class PropertyPermissionDemo {
   private static PropertyPermission permission;
   
   public static void main(String[] args) {
      // Create property permission object
      permission = new PropertyPermission("java.*", "read,write");
      // Check permissions
      checkFileReadPermission("java.home");
      checkFileWritePermission("java.home");
   }

   private static void checkFileReadPermission(String path) {
      // Check permission on read action
      if(permission.implies(new PropertyPermission(path, "read"))) {
         System.out.println("Has permissions on "+path+" for read");
      }
   }
   
   private static void checkFileWritePermission(String path) {
      // Check permission on read action
      if(permission.implies(new PropertyPermission(path, "write"))) {
         System.out.println("Has permissions on "+path+" for write");
      }
   }
}

讓我們來編譯和運行上麵的程序，這將產生以下結果：

Has permissions on java.home for read
Has permissions on java.home for write