Configuration 保存对配置文件路径的引用

如何在程序运行之间保留程序配置文件的自定义文件路径（由用户选择）

例如：

First time running program:

  User:     *opens program for first time*
  Program:  "What is the path to the configuration file for me?"
  User:     *choses path* "Right *here*."
  Program:  "OK, loading configuration file..."
  User:     *closes program*


Running the program a second time:

  User:     *opens program*
  Program:  "What is the path to the configuration file for me?"
  User:     "Why don't you remember?"

如何解决此问题

显然，我不能将配置文件的路径存储在配置文件中，这毫无意义。所以问题是：我可以在哪里存储用户选择的配置文件路径