Running other binaries or batch files from within java

Hello,
I recently inherited several closed-source windows executables. I need to execute them when a user clicks on a JButton. (after which I can parse the text files they generate)
I realize this will make my application windows-only...
Does anyone know how I can execute a file (or dos shell commands) from inside java?
Thank you in advance,
Andy

My understanding was the command.com (which isn't an executable, just like dir isn't an executable (not a windows user, doesn't know these things))
"Not to be confused with OS/2 Warp CMD.EXE, the file CMD.EXE is the Microsoft Windows NT command line shell and is more compatible and portable between different hardware platforms when compared to the original COMMAND.COM, which has been used as the command interpreter with DOS for several years. COMMAND.COM is included for backwards compatibility and is recommended that it be used when old MS-DOS programs may not be able to be run in Windows NT."
"Apart from what was listed in the opening paragraph, one of the most noticeable things a user is going to notice when using CMD to access MS-DOS is the ability to use long file names. When a user is using COMMAND they will need to use the short 8.3 name. For example, if a user wanted to access "My Documents" in COMMAND they would need to type "cd mydocu~1". However, a user who wanted access the same directory through CMD could type "cd my documents"."
I believe my legacy software falls in to the category of "old MS-DOS programs" (and the Windows XP kernel is based on NT)

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Iam not able to run a simple batch file from within java

This is how my code looks like.
It does'nt give me any error but I dont see the output from batch file which is suposed to be a simple redirection of dir command...
package mypackage1;
import java.io.File;
public class RunBatch
public RunBatch()
try{
Runtime rt = Runtime.getRuntime();
String cmd = "generate_invoice";
String path = "C:\\application\\Maps\\Reports";
File file = new File(path);
String[] envp = {""};
String[] args = {"C:\\application\\Maps\\Reports\\generate_invoice.bat"};
System.out.println("************ executing batch ");
Process proc = rt.exec(args);
System.out.println("************ batch executed ");
}catch(Exception e)
e.printStackTrace();
* @param args
public static void main(String[] args)
RunBatch runBatch = new RunBatch();
}

Runtime.exec() only can run executable files. Batch file is not an executable - it is a script executed by command interpreter (cmd.exe). So, you should execute "c:\windows\system32\cmd.exe /c C:\application\Maps\Reports\generate_invoice.bat".
Denis
http://www.excelsior-usa.com/jet.html
JVM with AOT compilation

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Can u give me an example
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Hi,
Can someone help me or direct me to a link,
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Thanks

You will need to grab a handle to the process's
outputstream so u can see its output.The OP didn't mention any output from any batch file;
nor any input for that
matter,so lets not complicate matters here for now
ok?Actually I think this is essential to see whether it works or not. It's either that or do some manual check to see whether it ran, which is not exactly elegant, and in some cases this may not be easier than simply writing the output stream code, or in fact it may be impossible to check manually.
I'm sure it wasn't intentional that your post appeared to be bristling with attitude.

Run a MS DOS batch file from the client

Hi,
I created a java source to run a bat file, the folder is loacted in the Database server.
(Not in application server)
create or replace and compile java source named execcommand as
import java.io.*;
import java.util.*;
public class ExecCommand{
public static void run(String cmdstr) throws IOException, InterruptedException
try {
int rtn;
cmdstr = "cmd /c " + cmdstr;
Process prcs = Runtime.getRuntime().exec(cmdstr);
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catch (IOException e) {
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I called the java source from the procedure
create or replace procedure run_batfile is
begin
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exception
when others then
dbms_output.put_line(sqlcode || sqlerrm);
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Shall i create any virtual directory ?
Thanks in advance,
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Hi Justin ,
Sorry for the late replay.
I am running Oracle on Windows.
The MS DOS Batch file is to convert XML file to PDF format. It is a Java Application.
also it is a batch process, thats why i created a batch file for that. I am using FOP to convert XML to PDF.
FOP is in the e:\services folder of the Database Server machiene. XML file is also in the same forlder and I need to generate the PDF file also in the same machiene.
<<- You have a client machine. What do you mean by "executing this from my PC (Client PC) directly on the RUN , its generating the PDF file in the server.">>
I have mapped the e:\services folder in my client machience, so i am accessible to the genPDF.bat file that is in the 'e:\services' folder of the DB Server. When i run the bat file from my PC as Start > Run e:\services\genPDF.bat . The PDF file has generated in the DB Server machien.
I dont have the copy of the batch file in client machiene, but i have mapped to my client machiene.
Thanks again,
Rizly

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Thank you very much...that worked file.
The relevant code is:
String arg = "G:/tma03/agents/stats.htm";
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i want to run some commands when i run one java program.
I wrote those dos commands on the batch file and i want to include the bat file in the java program so that i can execute the bat file when i run the java program.
tell me the way that i can run my bat file inside the java program.

i tried this :
a .bat file named test.bat, with this code : copy test.bat test2.bat
a java class, Test.class, in the same directory
public class Test {
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}

Problem executing .bat file from within Java class

I'm stumped: I have no problem executing a .bat file that sets classpaths and executes a Java jar, but when I try to execute other executables first and then the .jar, my application hangs and since the DOS box doesn't come up over my GUI, I can't see what's going on.
This works:
public void execute() throws Exception {
String s = "c:\\cs47auxs\\omnijar\\omni.bat";
Process p = Runtime.getRuntime().exec("\"" + s + "\"");
p.waitFor();
JOptionPane.showMessageDialog(frame,
"The Database Has Been Successfully Reloaded.",
"Information Message",
JOptionPane.INFORMATION_MESSAGE);
Here's the .bat 'omni.bat'
set JAVA_HOME=c:\j2sdk1.4.2_04\bin
%JAVA_HOME%\java -jar C:\CS47AUXS\OMNILOADJAR\OmniLoad.jar
This doesn't work:
public void execute() throws Exception {
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p.waitFor();
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SET NETX_HOME=C:\CS47AUXS
SET COBOL_HOME=C:\CS47AUXS\OFFLINE
CD %NETX_HOME%
CALL SET-NETX.CMD
CD %COBOL_HOME%
SSBPPC10 JOBOMNI X
SET JH=C:\J2SDK1.4.2_04\BIN
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CD %OMNI_HOME%
%JH%\java -jar omniload.jar
Can anyone shed some light here? Even when I execute the application from the command line the new DOS box doesn't become visible nor can I see any errors. If I could just get that visibility, I could probably figure out what is going wrong.

Same problem with me as well.... Badly looking for a solution...
I predict the following:
- If your batch file has pretty less number of dos/shell commands then it gets executed fine with exec() and proc.waitFor();
- If you increase the number of dos/shell commands in the bat file then try executing it then it definately hangs at proc.waitFor();
Even "cmd.exe /C C:\\test.bat" hangs... if the commands are more...
Is this some sort of bug? or am i doing anything wrong? I tried searching for solution on the net and search forums... but couldnt find a solution for the same.. not sure where i missed, what i missed...
Incase some one finds a solution.. do post it here...
Message was edited by:
amadas

Error running batch files from java source file???

Dear Friends,
hi,
this is with response to a doubt i had earlier ,
i want to run batch files from the java source file ,i tried using this code (here batrun is the batch file name that contains commands to run other java files)
try
String [] command = {"c:\\vishal\\finalmain\\batrun"};
Runtime.getRuntime().exec(command);
catch(Exception e)
but i got the following error.
java.io.IOException: CreateProcess: gnagarrun error= 2
plz. help me, i tried all combination w/o success,
in anticipation(if possible give the code after testing)
Vishal.

hello there,
i solved the prob. by using
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regards,
Vishal

Running batch files from Java using exec method

Hi,
I want to run a batch file from my Java program like this:
try {
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catch (Exception e) {
MessageBox.show(e.getMessage());
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First one unzips certain zip file.
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Please help.
TIA
Ravinder

From the FAQ:
2. How do you launch an external program on a Microsoft Windows platform from a program developed on the Java [tm] programming language?
The following will launch notepad in Microsoft Windows NT:
Runtime.getRuntime().exec("cmd /c notepad.exe");
To launch a program in Microsoft Windows 95/98 use:
Runtime.getRuntime().exec("c:\\windows\\notepad.exe");
The Runtime class allows interaction between a program and its environment. The first string command instructs the command line interpretor, cmd to open up the calculator application.
The exec() methods do not use a shell; any arguments must have the full pathname to the shell as well as the command itself.
For example, to run a shell on the UNIX� platform, type:
Runtime rt = Runtime.getRuntime();
Process p = rt.exec("/usr/bin/sh -c date");
To run a batch file under Microsoft Windows 95/98:
Process p = rt.exec("command.com /c c:\\mydir\\myfile.bat");
To run a batch file under Microsoft Windows NT:
Process p = rt.exec("cmd /c c:\\mydir\\myfile.bat");
where 'cmd' and 'command.com' are the command-line interpreters for Microsoft Windows machines.
The Runtime.exec() methods might not work effectively for some processes on certain platforms. Special care should be taken with native windowing, daemon, WIN16/DOS process or some shell scripts.
regards,
jarshe

Run remote batch file from Web Application Server

Hello,
I've developyed a Java program and deployed it on WAS v7.1.
My java program tries to run a remote batch file which is located on remote Windows file system (and not on the WAS file system itself).
The batch file was launched on the remote server (I saw it on the Task Manager of the remote server), but the remote batch file actually wasn't run (it was stuck).
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cd c:\jobs
psexec.exe
iltlvt40 -u SAPServiceCE1 -p a2i2000! c:\automation\DiskSpace\runDiskSpace.bat
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iltlvt40 is the remote server.
SAPServiceCE1/a2i2000! is a user/password on the remote server which has a full permissions.
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Best regards,
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Hi,
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Best regards,
Ahmad

URGENT:- Running a batch file from java program

Author: pkanury
I am trying to execute a batch file from my java program using RunTime and Process . It can execute any dos command except for a batch file. Can anyone throw
some light ?? My code looks like this .....
cmd = "command.com /c X:\\grits\\scripts\\test.bat"; Runtime rt = Runtime.getRuntime(); Process p = rt.exec(cmd);
The weird part is that p.waitFor() returns a status of 0 implying that the cmd has been executed successfully. But that is not the case. And my batch file is as simple as - type "ADADA" > junk.txt
Any help would be appreciated.

I think it should work when you use a String[] array
instead of a single String:
String[] cmd = { "command.com", "/C", "D:\\batch\\do.bat" };
Note: If the batchfile creates any output (i.e. files),
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which calls the batch file, not in d:\batch\...

Calling a batch file from PL/SQL

Is there a way to call a windows batch file from within a stored
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I need to check for error records in a table and if exists, I
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Re: Upgrate problem

How to pass arguments to a batch file from java code

Hi
I have a batch file (marcxml.bat) which has the following excerpt :
@echo off
if x==%1x goto howto
java -cp C:\Downloads\Marcxml\marc4j.jar; C:\Downloads\Marcxml\marcxml.jar; %1 %2 %3
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I'm calling this batch file from a java code with the following line of code:
Process p = Runtime.getRuntime().exec("cmd /c start C:/Downloads/Marcxml/marcxml.bat");
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since the batch file accpets arguments(%1 %2 %3) how do i pass those arguments to the batch file from my code ...???
%1 is a classname : for ex: gov.loc.marcxml.MARC21slim2MARC
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%3 is the name of the output file for ex: C:/Downloads/Marcxml/target.mrc
could someone help me...
if i include these parameters too along with the above line of code i.e
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Exception in thread main java.lang.Noclassdef foundError: c:Downloads\marcxml\source/xml
could some one tell me if i'm doing the right way in passing the arguments to the batch file if not what is the right way??
Message was edited by:
justunme1

1 - create a java class (Executer.java) for example:
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class Executer {
     public static void main(String[] args) {
          try {
               for (int i = 0; i < args.length; i++) {
                    System.out.println(args);
               Class<?> c = Class.forName(args[0]);
               Class[] argTypes = new Class[] { String[].class };
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               // String[] mainArgs = Arrays.copyOfRange(args, 1, args.length); //JDK 6
               //jdk <6
               String[] mainArgs = new String[args.length - 1];
               for (int i = 0; i < mainArgs.length; i++) {
                    mainArgs[i] = args[i + 1];
               main.invoke(null, (Object) mainArgs);
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          } catch (ClassNotFoundException x) {
               x.printStackTrace();
          } catch (NoSuchMethodException x) {
               x.printStackTrace();
          } catch (IllegalAccessException x) {
               x.printStackTrace();
          } catch (InvocationTargetException x) {
               x.printStackTrace();
          } catch (Exception e) {
               e.printStackTrace();
2 - create a .bat file:
@echo off
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Open MS-DOS, and type the following:
set TARGET_CLASS=MyTargetClass
set IN_FILE=in.txt
set OUT_FILE=out.txt
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It is possible to execute a batch file from a business service

Hi,
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Hi,
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Running other binaries or batch files from within java

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