自毁应用程序 [英] Self-destructing application

问题描述

沿着的路线这个磁带将在五秒内自毁。祝你好运，Jim ...

它会不会一旦达到预设的使用时间或其他条件，应用程序是否可以删除自身（或它的可执行包装形式）？

Would it be possible for an application to delete itself (or it's executable wrapper form) once a preset time of use or other condition has been reached?

或者，还有什么其他方法可以用于使应用程序无用吗？

Alternatively, what other approaches could be used to make the application useless?

这里的目标是让测试版到期，邀请用户获得更新的版本。

The aim here is to have a beta expire, inviting users to get a more up-to-date version.

推荐答案

这是可能的。为了解决JAR文件的锁定问题，您的应用程序可能需要生成后台进程，该进程在删除内容之前一直等待JVM退出。

It is possible. To get around the lock on the JAR file, your application may need to spawn a background process that waits until the JVM has exited before deleting stuff.

但是，这不是'防弹。有人可以安装应用程序，然后将安装的文件和目录设置为只读，这样您的应用程序就无法自行删除。通过操作系统访问控制系统的用户（或他们的管理员）对创建和删除的文件有最终决定权。

However, this isn't bomb-proof. Someone could install the application and then make the installed files and directories read-only so that your application can't delete itself. The user (or their administrator) via the OS'es access control system has the final say on what files are created and deleted.

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