java.util.PropertyPermission.equals(Object obj) 方法檢查，如果這個對象是等於obj。也就是說，它具有相同的名稱和動作與此對象

聲明

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

public boolean equals(Object obj)

參數

• obj -- 要檢查的對象

返回值

如果給定的對象等於此對象(即相同的名稱和動作)此方法返回true。

異常

NA

例子

下麵的例子顯示了java.util.PropertyPermission.equals(Object)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) {
      // Build property permissions collection
      permission = new PropertyPermission("java.home.usr", "read");
      
      // Check file read permissions
      checkFileReadPermissions("java.home.usr");
      // Check file write permissions
      checkFileWritePermissions("java.home.usr");
   }

   private static void checkFileReadPermissions(String path) {
      // Check permissions are equal
      if(permission.equals(new PropertyPermission(path, "read"))) {
         System.out.println("Has permissions on "+path+" for read");
      }
   }
   private static void checkFileWritePermissions(String path) {
      // Check permissions are equal
      if(permission.equals(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.usr for read