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EXECUTING SYSTEM COMMANDS THRU JAVA

4 replies on 1 page. Most recent reply: Feb 9, 2004 1:20 AM by Viswanatha Basavalingappa

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Sunitha C S

Posts: 20
Nickname: sunics
Registered: Dec, 2003

EXECUTING SYSTEM COMMANDS THRU JAVA

Posted: Feb 5, 2004 2:37 AM

Hi all,

i am in need of executing the operating system commands eg: ping, dir etc, in java programs. how can i do that?
please help at the earliest.

Sunitha

mahashankar sarangapani

Posts: 7
Nickname: greatmaha
Registered: Feb, 2004

Re: EXECUTING SYSTEM COMMANDS THRU JAVA

Posted: Feb 5, 2004 10:16 PM

hi sunitha!

you can use these following command to resolve your problem
Runtime rt = Runtime.getRuntime();
rt.exec(cmd);
cmd is the command with full path to execute.

Sunitha C S

Posts: 20
Nickname: sunics
Registered: Dec, 2003

Re: EXECUTING SYSTEM COMMANDS THRU JAVA

Posted: Feb 6, 2004 1:32 AM

Hello,
thanks for the method. but how can the output of the command executed will be printed on the screen?
Sunitha

David Ramsey

Posts: 34
Nickname: dlramsey
Registered: Apr, 2002

Re: EXECUTING SYSTEM COMMANDS THRU JAVA

Posted: Feb 6, 2004 9:17 AM

Runtime.exec(cmd) will return a java.lang.Process object. Go read up on the Process class in the SDK Javadocs. You can get an input and output stream from the process and then manipulate those streams.

Viswanatha Basavalingappa

Posts: 84
Nickname: viswagb
Registered: Nov, 2003

Re: EXECUTING SYSTEM COMMANDS THRU JAVA

Posted: Feb 9, 2004 1:20 AM

YES, It is possible
here is the code for the same....

import java.io.*;
class JavaTest
{
public static void main(String[] args)
{
try
{ Runtime rt= Runtime.getRuntime();
Process p = rt.exec("Dir"); // here u can do what ever dommand line execution...
//OutputStream op =p.getOutputStream();
InputStream ip = p.getInputStream();
}
catch(Exception IOException )
{

}
}
}

I hope this helps you....if you need more info let me know

Viswa
IBM - Bangalore
http://viswa.itgo.com
------------------

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