Java: runtime problems

borgy_t · 04-13-2005, 04:32 AM

here is my code:

Code:

	try {
		Runtime r = Runtime.getRuntime();
		Process p = r.exec ( "\\\\192.168.185.232" );
	}
	catch (Exception e) {
		e.printStackTrace();
	}

when i type "\\192.168.185.232" into the run console of windows, i can access the samba server. but when i execute this code in Java i get an error which says:

java.io.IOException: CreateProcess: \\192.168.185.232 error=123
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.<init>(Unknown Source)
at java.lang.Runtime.execInternal(Native Method)

the IP Address is the address of the samba server. alternatively, i can type "\\linuxpdc" in the windows run console ("\\\\linuxpdc" in java) to access the server. "\\\\linuxpdc" gives me the same error as "\\\\192.168.185.232".

why is this so? what should be my argument inside r.exec (String cmd) be to make it work?

btw, the application running this code is in windows. when i replace "\\\\192.18.185.232" with "explorer" or "notepad", etc it works.

thanks in advance!

ahwkong · 04-13-2005, 07:46 AM

"\\\\192.168.185.232" is not a command to java.

It is not a command to a DOS prompt in Windows either. Try "\\\\192.168.185.232" and DOS prompt cannot understand it.

What you see happening in Window is by design. It is a feature in Window's explorer. MS integrates IE into explorer such that explorer understand the "\\" syntax. It is similar to the way MS Window associates an file extension with a particular application. MS try to make it easier for you by guessing which application should be invoked for the particular file or url.

So back to java. exec() is more akin to execution of a program via a shell. It will not do the guess work, so you have to specify it.

borgy_t · 04-13-2005, 09:39 AM

i think i found the answer. i need JCIFS to enable my app to connect to the samba server. don't know ANYTHING about it though... help please!

ahwkong · 04-13-2005, 09:47 AM

If you use this lib to access the samba share drive, you would not be using exec().

If you use this lib, it means you are going to access the share via programmatical means. e.g. create a smbSession object first before list the content in the share.

I hope you understand the difference between this appoarch and exec() in your original post.

borgy_t · 04-13-2005, 09:33 PM

yes yes, i understand i won't be using exec() to access the server. i will have to familiarize myself with JCIFS but first, i would have to find an online guide or tutorial. any suggestions as where to find them? googling hasn't given me very helpful results.