Run dos command from java

May I ask how I should write if I want to execute a dos command in java? The command is :
"C:\Program Files\Real\realproducer\rmeditor -i abc.rm -d abc.txt". Should I use array?
Thanks!

why an array ?
String command = "C:\\Program Files\\Real\\realproducer\\rmeditor -i abc.rm -d abc.txt";
Process p = Runtime.getRuntime().exec( command );what about the seach function on the left side ? ;-)
tobias

Similar Messages

Running DOS command from JAVA

Hi ,
I would appreciate if anyone could tell me how to run DOS command such as "del" using JAVA language .Thank you.

<steps onto soapbox>
Surely for something like 'del' we should be advocating a non-OS specific method so we don't lose sight of Java's cross platform abilities.
If it has to run an OS specific thing fine, but please look for a non OS specific solution first.
<steps off soapbox>

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
This command gives the ProcessList.txt file and it contains the processid. I have to read this file to find the processid.
when i execute this command in dos prompt, it gives the processid in the ProcessList.txt file. But when i execute the same command in java program it keeps running mode only.
Code to run this command is,
public class KillProcess {
     public static void main(String args[]) {
          KillProcess kProcess = new KillProcess();
          kProcess.getRunningProcess();
          kProcess = new KillProcess();
          kProcess.readProcessFile();
     public void getRunningProcess() {
          String cmd = "wmic /output:ProcessList.txt process where \"name='java.exe'\" get commandline,processid";
          try {
               Runtime run = Runtime.getRuntime();
               Process process = run.exec(cmd);
               int i = process.waitFor();
               String s = null;
               if(i==0) {
                    BufferedReader stdInput = new BufferedReader(new
                           InputStreamReader(process.getInputStream()));
                    while ((s = stdInput.readLine()) != null) {
                     System.out.println("--> "+s);
               } else {
                    BufferedReader stdError = new BufferedReader(new
                           InputStreamReader(process.getErrorStream()));
                    while ((s = stdError.readLine()) != null) {
                     System.out.println("====> "+ s);
               System.out.println("Running process End....");
          } catch(Exception e) {
               e.printStackTrace();
     public String readProcessFile() {
          System.out.println("Read Process File...");
          File file = null;
          FileInputStream fis = null;
          BufferedReader br = null;
          String pixieLoc = "";
          try {
               file = new File("ProcessList.txt");
               if (file.exists() && file.length() > 0) {
                    fis = new FileInputStream(file);
                    br = new BufferedReader(new InputStreamReader(fis, "UTF-16"));
                    String line;
                    while((line = br.readLine()) != null) {
                         System.out.println(line);
               } else {
                    System.out.println("No such file");
          } catch (Exception e) {
               e.printStackTrace();
          return pixieLoc;
}     when i remove the process.waitFor(), then while reading the ProcessList.txt file, it says "No such file".
if i give process.waitFor(), then it's in running mode and program is not completed.
Colud anyone please tell me how to handle this situation?
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
    InputStream is;
    String type;
    StreamGobbler(InputStream is, String type)
        this.is = is;
        this.type = type;
    public void run()
        try
            InputStreamReader isr = new InputStreamReader(is, "UTF-16");
            BufferedReader br = new BufferedReader(isr);
            String line=null;
            while ( (line = br.readLine()) != null)
                System.out.println(type + ">" + line);
            } catch (IOException ioe)
                ioe.printStackTrace();
public class GoodWindowsExec
    public static void main(String args[])
        try
            String osName = System.getProperty("os.name" );
            String[] cmd = new String[3];
             if( osName.equals( "Windows 95" ) )
                cmd[0] = "command.com" ;
                cmd[1] = "/C" ;
                cmd[2] = "wmic process where \"name='java.exe'\" get commandline,processid";
            } else {
                cmd[0] = "cmd.exe" ;
                cmd[1] = "/C" ;
                cmd[2] = "wmic process where \"name='java.exe'\" get commandline,processid";
            Runtime rt = Runtime.getRuntime();
            System.out.println("Execing " + cmd[0] + " " + cmd[1]
                               + " " + cmd[2]);
            Process proc = rt.exec(cmd);
            System.out.println("Executing.......");
            // any error message?
            StreamGobbler errorGobbler = new
                StreamGobbler(proc.getErrorStream(), "ERROR");
                      // any output?
          StreamGobbler outputGobbler = new
                StreamGobbler(proc.getInputStream(), "OUTPUT");
                      // kick them off
            errorGobbler.start();
            outputGobbler.start();
            // any error???
            int exitVal = proc.waitFor();
            System.out.println("ExitValue: " + exitVal);
        } catch (Throwable t)
            t.printStackTrace();
}when i execute the above code, i got output as,
Execing cmd.exe /C wmic process where "name='java.exe'" get commandline,processid
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?

Dos command from java

hi all
how do i run dos commands from java??????????

Using Runtime#exec().
Also see http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Runtime.html

Running ls command from Java stroed procedure no output

Hi ,
I am trying to run ls command from java stored procedure in oracle
Process p = Runtime.getRuntime().exec("ls");
BufferedReader stdInput = new BufferedReader(new
InputStreamReader(p.getInputStream()));
BufferedReader stdError = new BufferedReader(new
InputStreamReader(p.getErrorStream()));
// read the output from the command
System.out.println("output of the command run:\n");
while ((s = stdInput.readLine()) != null) {
System.out.println(s);
from java stored procedure in oracle.
i get output of println statments but it does not go into while loop to print from stdInput.
Result of running Java stored procedure is -
output of the command run:
Call completed.
when i run the program on client side it works fine.
Has anybody tried this from java stroed procedure.
Thanks,
Jag

Jag,
Actually, the question of whether it works for me seems to depend on the version of the OS (or Oracle). On RedHat Linux (Oracle 8.1.6) it didn't work at all, but on Solaris (Oracle 9.0.2) it did. Here's the output from that run:
SQL> /
output of the command run:
init.ora
initDBPart9i.DBPSun01.ora
initdw.ora
lkDBPART9I
orapw
orapwDBPart9i
spfileDBPart9i.ora
Done
PL/SQL procedure successfully completed.
But, I did need to change a line of your code to this:
Process p = Runtime.getRuntime().exec("/usr/bin/ls");
your original was:
Process p = Runtime.getRuntime().exec("ls");
You might consider, if possible, use of some of the Java File classes instead of ls, as this might make things more predictable for you. There were some examples in oramag.com a few months ago, but they were pretty simple (you might not need them).
Hope this helps,
-Dan
http://www.compuware.com/products/devpartner/db/oracle_debug.htm
Debug PL/SQL and Java in the Oracle Database

How to run DOS command in Java environment?

Can i run DOS command in Java environment?
I did like this:
Runtime r = Runtime.getRuntime();
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\"");

DOS command from java applet

Hi, I need to perform a DOS command from Java (using WFC if needed)...
I have no idea, so please help!
Thank you.

OH OH OH WAIT! It is an Applet! i think there will be some security issues here! Sure enough you can't execute commands on the system from an applet unless you make some changes on the java.policy files on the client machine (that means, if your applet is in a web page, every machine which view your page).

Running ssh command from java and then answering password prompt

Hi,
I have a situation that has not solved yet. I am running ssh command from unix terminal without any problem, and then i enter password.
For example :
[oracle@fuata]:/export/home/oracle> ssh -N [email protected] -L 9901:127.0.0.1:9999
Password:
It is working. I have question that how can i perform this in java? I am thinking that i can run ssh command by using Runtime Class, it is ok. But how can i answer the password? I am a bit confused. Is there any example looks like this?
Thanks for responses.

futi wrote:
Thanx. Firstly i insisted to do this without jsch but actually this is harder than jsch. I edit some of code pieces PortForwardingL.java and could run it. It works problem-free. Could you say why you "insisted" on this approach. It can't be for speed+ since jsch is very fast. It can't be for portability+ since jsch is portable but the use of Runtime.exec() requires the installation of ssh software. It can't be because of limitations+ since jsch is a fully featured library. It can't be for security+ since jsch is secure. It can't be for ease of use+ since jsch is much easier to use than ssh with Runtime.exec(). Unless it's a licensing issue, it can't be for commercial+ reasons since jsch is free. The only reason I can think of why one would "insisted" on this approach is if it is for some college project.

How to run system commands from JAVA

Hi Friends,
How to run windows system commands from JAVA
Runtime r=Runtime.getRuntime();
r.exec("dir");
Throwing following Exception
CreateProcess :dir error=2
Thanks in advance
Hamsa

Hi ,
in Windows NT this is not possible, you can use the following :
Runtime r=Runtime.getRuntime();
StringBuffer sbuf = new StringBuffer();
String dir = new String();
java.lang.Process proc = r.exec("cmd /c dir");
InputStream is = proc.getInputStream();
int ch ;
while((ch=is.read() ) != -1)
sbuf.append((char)ch);
is.close();
dir = sbuf.toString();
System.out.println(dir );

Invoking dos commands from java

hi all,
I just want to invoke dos prompt from java.I know it can be done using "Runtime.getRuntime()" command.But when i try to create a directory inside another directory,how can i specify the path of the destination directory.i googled as well as tried different things.But i failed to make it up.Please help me solve this problem.
thanks in advance
Regards

Hai,
Thanks for your respond.
If I give "cmd" command only, I am getting dos command window, but I didn't get the prompt like
c: or d:
How can I do it?
Expecting more helps
Joseph

How can I run a dos command from java on windows 98, 95?

The usage of cmd.exe in the java program to run a dos command on windows 98. 95 doesn't work as the equivalent command is command.exe
But using the command.exe in the java program makes my program to hang.

hi,
As u mentioned, u cannot use the cmd.exe in win9x environment as cmd.exe is specific to windows NT, you can use the command.exe without any hitches.
for eg
java.lang.Runtime.getRuntime().exec("start command /K a.bat"); should run the batch file a.bat..
if the problem persists, try posting the snippet of code that you are using.
cheerz
ynkrish

Error while running DOS command in Java

Hi all,
I use "runtime" class to execute a DOS command "copy C:\\pathname\\*.* C:\\backupPathname\\". But I saw an error msg "CreateProcess: copy C:\pathname\*.* C:\backupPathname\ error=2".
I did create a folder C:\backupPathname\ before running the DOS command.
Pls help me all Java genius.

I ended up writing a small 'c' program and pasing the command in to it from java. The problem seems to be that in dos, unlike unix, the copy command is not a program, rather the command is interpreted by the command.com program.

Use several DOS command from java program

Using "Runtime.getRuntime().exec(toto.bat)" I have no problem to run a Command in my DOS window...
But the problem appear when I want to call another command in this same window from myApp.java...
In fact after executing the first command I find no way to have another access to this DOS window...
Is there any way to set the Process created by calling exec() method as the default system??
Hope my explications are clear...
Does someone have the solutions...this will help me so much...
bilbou.

ok but I have found no forum which resolve my problem...can you give more details about what you think concerning the solution of my pb...
bilbou.

Executing a dos command from java in windows nt

i need to execute the
" net send"
command from the command line in windows nt, from within my java program... is there any way that i can execute cmommands in the dos command shell? or rather, does anybody know a way i can send a message ( in windows ) from java, from one computer to another over the lan?? I cannot have a java programming running on all the other computers, so i cannot make my program serve, it must just send the messges using a lan command....
(the net send command just sends a message in the form of a pop up box on the receiver's screeen)
thanks a bunch guys!!!
Thanks a bunch guys!!!!

you can do that with exec() in Runtime.
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(command here);but before you do that you need to read this:
http://www.javaworld.com/jw-12-2000/jw-1229-traps.html
hth
partha

Error using DOS Command from Java

Hi,
I am using the following code to execute the DOS command to delete a file from Java.
cmd = "del " + fileName;
Runtime run = Runtime.getRuntime();
Process proc = run.exec(cmd);
Getting the following exception during runt time.
Exception = java.io.IOException: CreateProcess: del D:\LAWDOCS\P50074\12\3\36857.3 error=2 --
Can some body throw light on this?.
Thanks,
Jeyaraman R

"del" is not an actual executable file, but instead a command in the command interpreter. So you can't just execute del like that, you have to run the command interpreter and tell it to execute the del command.
If you are on windows NT, 2000 or XP, replace your command with "cmd /C del " + filename.
If you are on Windows 95, 98 or ME, use "command /C del " + filename. (I am not quite sure if the switch for this is called /C on old windows version.)
(But why not use File.delete()?)

Run dos command from java

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