java.util.PropertyPermission.implies(Permission p) 如果这PropertyPermission暗示指定的权限方法检查。这是通过检查PropertyPermission对象，对动作p是该对象的动作子集，如果这个对象的名字所暗示p的操作。

声明

以下是java.util.PropertyPermission.implies()方法的声明

public boolean implies(Permission p)

参数

• p -- 检查的权限对象。

返回值

如果此对象暗示指定的权限，此方法返回true。

异常

NA

例子

下面的示例演示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");
      }
   }
}

让我们来编译和运行上面的程序，这将产生以下结果：

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