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Oct 22nd, 2008

Re: Need help to run Command Prompt from java program

I don't know the exact solution. I may try once I go home. Just few suggestions:
1. Since Java 1.5 a new class ProcessBuilder has been introduced to replace exec(). So might be a good idea to try with ProcessBuilder and see if it works.
2. A work around can be to take user input, execute it, and display it. Might be a lot of work. You may find this useful: http://forums.sun.com/thread.jspa?th...sageID=4351862

orko

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Oct 23rd, 2008

Re: Need help to run Command Prompt from java program

Hi manisha ,

I tried the same above but it's not opening the command prompt ,
it's compiled successfully , but it is hanging after that ,

Quote ...

(Toggle Plain Text)
sekharbabuk@sekharbabuk /cygdrive/c/j2sdk1.4.2_16/bin
$ javac RunUnixCommand.java

sekharbabuk@sekharbabuk /cygdrive/c/j2sdk1.4.2_16/bin
$ java RunUnixCommand
-----------###------------------------------------------
 Command = cmd.exe
--------------------------------------------------------
 File Found : Microsoft Windows XP [Version 5.1.2600]
 File Found : (C) Copyright 1985-2001 Microsoft Corp.
 File Found :
sekharbabuk@sekharbabuk /cygdrive/c/j2sdk1.4.2_16/bin $ javac RunUnixCommand.java sekharbabuk@sekharbabuk /cygdrive/c/j2sdk1.4.2_16/bin $ java RunUnixCommand -----------###------------------------------------------ Command = cmd.exe -------------------------------------------------------- File Found : Microsoft Windows XP [Version 5.1.2600] File Found : (C) Copyright 1985-2001 Microsoft Corp. File Found :

i tried this using cygwin environment in windows operating system..

babusek

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Oct 23rd, 2008

Re: Need help to run Command Prompt from java program

thanks Orko,
but ProcessBuilder does the same. My problem is that in the end i need a command prompt window to open.Its working when i change the command from "cmd" to"notepad.exe". Its working then.I am really unable to figure out the problem.Anyways thanx for making an effort to help

manisha

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Oct 23rd, 2008

Re: Need help to run Command Prompt from java program

Sorry i dont have any idea about cygwin env

Click to Expand / Collapse Quote originally posted by babusek ...

Hi manisha ,

I tried the same above but it's not opening the command prompt ,
it's compiled successfully , but it is hanging after that ,

i tried this using cygwin environment in windows operating system..

manisha

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Oct 23rd, 2008

Re: Need help to run Command Prompt from java program

ok, if u you know the answer please post here..

babusek

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Feb 26th, 2009

Re: Need help to run Command Prompt from java program

I think it's "a bit"

late, but... for anyone still "listening"...

Java Syntax (Toggle Plain Text)
String[] command = { "cmd.exe", "/C", "Start"};
Runtime.getRuntime().exec(command);
String[] command = { "cmd.exe", "/C", "Start"};
Runtime.getRuntime().exec(command);

Works for me. Hope it helps.

Last edited by peter_budo; Nov 17th, 2011 at 6:17 am. Reason: Adding code tags to old post

alinutza200483

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Feb 26th, 2009

Re: Need help to run Command Prompt from java program

Hi Manisha,
I tried the exact same thing you are attempting to do. I found that it is possible but very difficult (I never did it) I found the best way is to just launch cmd with arguments.

PhiberOptik

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Mar 2nd, 2010

Re: Need help to run Command Prompt from java program

Hi Manisha,

U can try this out!
String Command = "C:/WINDOWS/system32/cmd.exe";

sramaraj

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Mar 4th, 2010

Re: Need help to run Command Prompt from java program

Try this:

JAVA Syntax (Toggle Plain Text)
try {
	    Runtime.getRuntime().exec("cmd /c start");
	}
	catch (IOException e){	}
try {
	    Runtime.getRuntime().exec("cmd /c start");
	}
	catch (IOException e){	}

silverastrid

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Apr 2nd, 2010

Hi Manisha this might help you...

Click to Expand / Collapse Quote originally posted by manisha ...

Hi,

I want to start the command prompt window from my java program.
Tried using Runtime but its not working.These are my codes :

String command = "cmd.exe";
try {
child = Runtime.getRuntime().exec(command);
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

Actually, its working when i change the value of command, like ita working when i put "notepad.exe". May be i m using a wrong command for cmd prompt. If anyone can figure it out, then i will be really thankful.

You will have to use the following code as the cmd line.

Java Syntax (Toggle Plain Text)
String cmd="copy \"c:\\file.txt\" \"c:\\fil_copy.txt\" ";
String command="cmd /c "+cmd;
Runtime.getRuntime().exec(cmd);
String cmd="copy \"c:\\file.txt\" \"c:\\fil_copy.txt\" ";
String command="cmd /c "+cmd;
Runtime.getRuntime().exec(cmd);

The "/c" specifies the system to consider "cmd" as a command.

Last edited by peter_budo; Nov 17th, 2011 at 6:18 am. Reason: Adding code tags to old post

papsofts

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