How to run dos command in jsp

hi all,
i am running this command at command prompt
like below
java filename argument.
ex: java validateuser user1
it works fine at command prompt. and the same command i want to run in jsp
so i tried like this
Runtime x = Runtime.getRuntime().exec("java validateuser user1");
whats happenning here is it just opening command promot of java.exe but its not running validateuser.
any help will be greatly appreciated.
advance thanks.

why on earth are you trying to run java.exe on the command line through JSP?i think you misunderstand my question.
i am not trying to run java.exe on through jsp.
I am trying to run a validateuser user1 in jsp .
Note:validateuser is a java file which take one argument.here in my scnerio user1 is the argument.

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Can i run DOS command in Java environment?
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r.exec("cmd.exe");
r.exec("set classpath=%CLASSPATH%;.\\tmp")
but failed.
However if I run the java command, it runs successfully.
r.exec("javac Test.java");
r.exec("java Test");
how should I do so that i can run the DOS commands metioned above in Java Environment?
thanks a lot.

Have a look at http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
This may help. I wonder if this is ok ?
Runtime r= Runtime.getRuntime();
r.exec("cmd.exe /C set classpath=%CLASSPATH%;.\\tmp\"");

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How can one run OS commands from JSP's?

Hi
I figured out the perms problem I had, and running a java class that calls Runtime.exec() now works - apparently; in fact, it doesn't really run the OS command, but returns "OK".
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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Paulo Rodrigues ([email protected]):
Hi
I figured out the perms problem I had, and running a java class that calls Runtime.exec() now works - apparently; in fact, it doesn't really run the OS command, but returns "OK".
Anyone have an idea how to make it actually run?
Thanks,
Paulo<HR></BLOCKQUOTE>
Hi Paulo, i use for that function the following code:
// JDC Tech Tips February 15, 2000
import java.io.*;
import java.util.ArrayList;
public class ExecDemo {
static public String[] runCommand(String cmd)
throws IOException {
// set up list to capture command output lines
ArrayList list = new ArrayList();
// start command running
Process proc = Runtime.getRuntime().exec(cmd);
// get command's output stream and
// put a buffered reader input stream on it
InputStream istr = proc.getInputStream();
BufferedReader br =
new BufferedReader(new InputStreamReader(istr));
// read output lines from command
String str;
while ((str = br.readLine()) != null)
list.add(str);
// wait for command to terminate
try {
proc.waitFor();
catch (InterruptedException e) {
System.err.println("process was interrupted");
// check its exit value
if (proc.exitValue() != 0)
System.err.println("exit value was non-zero");
// close stream
br.close();
// return list of strings to caller
return (String[])list.toArray(new String[0]);
public static void main(String args[]) throws IOException {
try {
// run a command
String outlist[] = runCommand("rm ./dummy");
// String outlist[] = runCommand("ls");
// display its output
for (int i = 0; i < outlist.length; i++)
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Gert
null

HOW DO I RUN DOS COMMANDS ON JAVA

I SWEAR, I'LL PAY YA IF YOU HELP ME!!!
Hi, this is the thing:
have you ever run the "time" command on a DOS console?? if you have, you know that it shows the current time, and lets you set a new time.
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thank you!! and please attach your account # so you get a $50 deposit by the end of the week
thank you!!

Thanks a lot, you all guys, but i don't know what's with this thing.... it always throws an IOException, with the following exception stack trace:
java.io.IOException: CreateProcess: temp.bat error=0
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        at java.lang.Win32Process.<init>(Win32Process.java:63)
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        at java.lang.Runtime.exec(Runtime.java:550)
        at java.lang.Runtime.exec(Runtime.java:416)
        at java.lang.Runtime.exec(Runtime.java:358)
        at java.lang.Runtime.exec(Runtime.java:322)
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Problem while running dos command from java program

Dear friends,
I need to terminate a running jar file from my java program which is running in the windows os.
For that i have an dos command to find process id of java program and kill by using tskill command.
Command to find process id is,
wmic /output:ProcessList.txt process where "name='java.exe'" get commandline,processid
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public class KillProcess {
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or Is there anyother way to kill the one running process in windows from java program?
Thanks in advance,
Sathish

Hi masijade,
The modified code is,
class StreamGobbler extends Thread
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    StreamGobbler(InputStream is, String type)
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            while ( (line = br.readLine()) != null)
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public class GoodWindowsExec
    public static void main(String args[])
        try
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}when i execute the above code, i got output as,
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and keeps in running mode only.
If i execute the same command in dos prompt,
CommandLine
ProcessId
java -classpath ./../lib/StartApp.jar;./../lib; com.abc.middle.startapp.StartAPP 2468
If i modify the command as,
cmd.exe /C wmic process where "name='java.exe'" get commandline,processid > 123.txt
and keeps in running mode only.
If i open the file when program in running mode, no contents in that file.
If i terminte the program and if i open the file, then i find the processid in that file.
Can you help me to solve this issue?

How to run a command line argument

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[/code

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Thanks

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http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html

How to run dos command in jsp

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