c++ java

tasnim · 05-31-2008, 08:01 PM

is there analogy of system("cd") command of linux in
java

osor · 05-31-2008, 08:39 PM

No (at least not since the last time I checked). For some reason the java people do not think it necessary to have a chdir() function. I think there is some hack involving “System.setProperty("user.dir")” but this has other, unexpected side-effects.

paulsm4 · 05-31-2008, 09:26 PM

'system ("cd")' on Windows will change your processes directory.

The same 'system ("cd")' on Linux won't. "System()" spawns a subshell ... the subshell changes directory (leaving the parent process unaffected) ... and when "system()" exits, the parent's directory is precisely the same as before. 'system ("cd")' is effectively a no-op on Linux.

Osor is correct in discouraging you from trying "user.dir".

Here's a good explanation about why Java works the way it does:
http://www.devx.com/tips/Tip/13804