如何使用Java查找应用程序安装路径目录

Question

I have installed my jar application using packjacket, an installer generator. http://packjacket.sourceforge.net/

default installation path will be in "../program files/myapp.jar"

but how can java language detect different installation path if user decide to change to different path directory during installation. (currently i just hard code the default location as C:/../program files/)

i have read this question, How to find an application installation path in the ms windows registry via EXE name . But regrettably still not understand.

ps: im not sure if my jar application have registry path or not because i rely on packjacket installer to install my apps.

this reference is unclear: find the path of my application installed in registry

Answer 1

Your question is a little unclear.

Your application should never make assumptions about where it might be stored and should rely on relative paths or know variable paths, such as the user's home directory ( System.getProperty("user.home") ).

You can find you current "working" directory using System.getProperty("user.dir")