Runtime.exec() for different Windows versions ?

Hello all.
I'm currently developing a Java program that uses Runtime.exec() to launch a MS-DOS application (the old MS-Kermit). It works fine under Windows ME and Java 1.3.1 but the very same code fails to work under Windows 2000. That's very bad for me, since my program should work on all windows platforms from 95 up to XP (and NT).
My question is : can I trust Runtime.exec() or am I damned to write different versions of the same command for different operating systems ?
Thanks.

Runtime is not os independent, so yes, it has to accomodate the os differences. There is an enhancement request on the subject, tho.
Search the forums, there is code that handles the differences posted.

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Runtime.exec and locked window

So I'm working in a Swing application guaranteed to run only on Windows systems using Java 1.6 u 7. The users want a help button to launch a local web browser and point to the company's web site.
After reading online and finding that getDesktop.browse() sometimes crashes in that version of Java, I use Runtime.exec("rundll ...") to kick off the local browser with the appropriate web address.
The browser comes up appropriately, but the original Swing application's mouse pointer converts to an hourglass; I can click on the original window and get results but I can't open a new window.
So I create a short thread implementing the Runnable interface and put the Runtime.exec call in that thread; I assume the problem is that the process is interfering with the GUI thread, and putting the Runtime.exec call in a separate thread will clear the problem up. It doesn't work; I still have the hourglass.
I read online that some processes require that their input and error streams be consumed, or they may block; That shouldn't be a problem with internet explorer, but I add two threads to consume those streams; still no change.
I also tried getDesktop().browse() anyway, and in a separate thread, and had the same problem.
Does anyone have any suggestions?
Respectfully,
Brian P.

Okay.
First, let's look at the basic client.
As you can see, when asked to show a window,
it puts it in a separate thread for rendering:
public class Client
// Show one example method
     private void showNewWindow(Window window)
          ourLogger.info("New request to display window: " + window.getClass().getName());
          if (window instanceof ClientWindow)
               try
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                    ((ClientWindow) window).setClient(this);
                    if (window instanceof ClientJDialog)
                         window = new ClientJDialog((ClientJDialog) window);
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                         correctSize(window);
                    showCenter(window);
                    synchronized(myWindows)
                         myWindows.add(window);
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          else
               throw new Error(window.getClass().getName() + " is NOT an instance of ClientWindow");
// Snip some more
At this same level on this class, I had originally put a showHelp() procedure with a single
command thus:
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          Desktop.getDesktop().browse(java.net.URI.create(<help web site>));
Simple, eh? But that gave me the hourglass as discussed. So I pushed it into a new thread.
It eventually mutated thus:
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          StreamGobbler s2 = new StreamGobbler ("stderr", p.getErrorStream ());
          s1.start ();
          s2.start ();
          try {
          p.waitFor();
          } catch (java.lang.InterruptedException e) {}
So as you can see, I ditched Desktop from Runtime and added a pair of stream consumers
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Edited by: pendell on Apr 16, 2010 3:14 PM

Runtime.Exec for 'appref.ms' files

Hello!
I am using Runtime.exec to call an external application from java classes. These classes are in turn used by JSP.
The external application is an "Application Reference" type application in Windows, and has the extension appref.ms
From Glassfish logs, I can see the following error:
java.io.IOException: Cannot run program ""C:\Documents and Settings\Administrator\Start Menu\Programs\ProTeleCo\QuotEncrypt.appref-ms"": CreateProcess error=193, %1 is not a valid Win32 application
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    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
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    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
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    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
    at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:288)
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    at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:579)
    at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:831)
    at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
    at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
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Caused by: java.io.IOException: CreateProcess error=193, %1 is not a valid Win32 application
    at java.lang.ProcessImpl.create(Native Method)
    at java.lang.ProcessImpl.<init>(ProcessImpl.java:81)
    at java.lang.ProcessImpl.start(ProcessImpl.java:30)
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:452)
    ... 35 moreWhen I open a command window and type
"C:\Documents and Settings\Administrator\Start Menu\Programs\MyCompany\QuotEncrypt.appref-ms" <arg1> <arg2>
The program runs without problems.
I actually tried copying the QuotEncrypt.exe file that is built in the development environment to the server and give that as argument to Runtime.exec, but in that case the application seems to run (I use waitfor and the return value from waitfor) , return with 0, but it has no side effects. It does not even write to its log file.
Hence I am at a loss to what to do.
Appreciate any help,
Irem

And now the program hangs.
It seems to be time for code indeed:
String[] commands = {"C:\\WINDOWS\\system32\\cmd.exe", " /start ", Constants.QuotEncryptPath, " \""+qfile + "\"", Constants.encryptPassword};
runExternal(commands);
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        try
            Runtime rt = Runtime.getRuntime();
            System.out.println("Execing ");
            String whole="";
            for(int i =0; i < commands.length ; i ++)
            whole = whole + commands;
System.out.println(whole);
Process proc = rt.exec(commands);
// 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();
import java.io.*;
import java.util.*;
* @author iaktug
class StreamGobbler extends Thread
InputStream is;
String type;
StreamGobbler(InputStream is, String type)
this.is = is;
this.type = type;
@Override public void run()
try
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line=null;
while ( (line = br.readLine()) != null)
System.out.println(type + ">" + line);
} catch (IOException ioe)
ioe.printStackTrace();
I got the code from the famous when Runtime.exec() won't. I am now suspecting there is something wrong with this part.
Essentially I want a very simple thing. The external program will run and the parent program will wait for it and get the return value.
I added the Stream stuff simply to prevent deadlock/hanging.
I am considering trying to get that out completely.
The server messages go as follows:....
Execing |#]
[#|2009-12-17T09:42:40.499+0400|INFO|sun-appserver2.1|javax.enterprise.system.stream.out|_ThreadID=878233;_ThreadName=httpSSLWorkerThread-8082-4;|
C:\WINDOWS\system32\cmd.exe /start "C:\Documents and Settings\Administrator\Start Menu\Programs\ProTeleCo\QuotEncrypt.appref-ms" "H:\QUOTATIONS\Quotations\In Progress\q00502.xls"1q2w3e|#]
[#|2009-12-17T09:42:40.499+0400|INFO|sun-appserver2.1|javax.enterprise.system.stream.out|_ThreadID=878234;_ThreadName=Thread-923673;|
OUTPUT>Microsoft Windows [Version 5.2.3790]|#]
[#|2009-12-17T09:42:40.499+0400|INFO|sun-appserver2.1|javax.enterprise.system.stream.out|_ThreadID=878234;_ThreadName=Thread-923673;|
OUTPUT>(C) Copyright 1985-2003 Microsoft Corp.|#]
[#|2009-12-17T09:42:40.499+0400|INFO|sun-appserver2.1|javax.enterprise.system.stream.out|_ThreadID=878234;_ThreadName=Thread-923673;|
OUTPUT>|#]

Runtime exec opens new window

Hi, I am using Runtime.exec to run an external application in Windows2000. � can read its output and i can destroy it without any problems.
But when i run my java application with javaw , the external application i run with rt.exec opens new window(without output texts, empty) . just output command windows which opens when i run the external app. from a command prompt.
If i run my java application with java.exe then then external application DO NOT open new window and run correctly. But this time my java window stays on desktop, and that's not any good for a Windows Application.
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bug with ID: 4244515

Runtime.exec error in windows

When i try to run an external program with Runtime.exec() in windows 2000, i get a windows pop-up with the following error msg:
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Rumy

I've personally just encountered the same error. I am building a piece of demonstration software to distribute with my graduate school applications to demonstrate my programming experience and I wish to include a set of programs I wrote some years ago in Pascal and C++. The software has been compiled for MS-DOS 6.0. I am using the following command to execute the software from within my Java program:
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Error while setting up environment for the application. Choose 'Close' to terminate the application.
I have another code segment in which I attempt to run the executable myself (without the help of command.com or the batch file). The code segment is as follows:
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     at (my code)I have already found the document on Microsoft's support website which describes a solution to this problem. Manually extracting the autoexec.nt, config.nt, and command.com files from the installation CD-ROM did not help.
The most confusing element of this: 12CARDS.EXE runs fine if I execute it from Windows Explorer. It's only a problem if it's executed from within my Java program. I have two other DOS programs which I want to include as well; I am having the same trouble with them.
Any advice will be much appreciated. Thanks!

Make can't recursively call Make when run from Runtime.exec (for some user)

This one is a little complicated. The afflicted platform is Mac OS X. It works fine on Linux, it seems, and even then, it does work for some Mac OS X users...
First, the setup. I have a Java program that has to call GNU Make. Then, GNU Make will recursively call Make in some subdirectories. This results in the following Java code:
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-IsmAvatar

YoungWinston
YoungWinston wrote:
IsmAvatar wrote:
However, for one particular user, using Mac OS X, he has reported the following output:One particular user, or all users on Mac OS?In this case, I have two mac users. One is reporting that all works fine. The other is reporting this problem.
cd subdirectory && make
/bin/sh: make: command not found
make: *** [PROJNAME] Error 127Which is like, kinda hurts my head... make can't find make, apparently.If that is being reported on the command line, then I'd say that make wasn't being found at all.If make isn't being found, then who's interpreting the Makefile?
It's also just possible that the make script on Mac isn't correctly exporting its PATH variable, though it seems unlikely, since this would surely have been reported as a bug long ago.
I've gotten some suggestions that it might be due to the "cd" command acting wonky...Also seems unlikely. 'cd' has been around since shortly after the K-T extinction event.
WinstonBy "acting wonky", I mean being given a bad work directory or some such, such that it's not changing to the intended directory.
Andrew Thompson
Andrew Thompson wrote:
(shudder) Read and implement all the recommendations of "When Runtime.exec() won't" (http://www.javaworld.com/jw-12-2000/jw-1229-traps.html).
Already read it. I already know the dreadful wonders of Runtime.exec. But in this case, it's been working fine for us up until one Mac user reported that make can't find make.
Also, why are you still coding for Java 1.4? If you are not, use a ProcessBuilder, which takes a small part of the pain out of dealing with processes.Usually I do use a ProcessBuilder. I noticed that it usually delegates to Runtime.exec() anyways, and seeing as I didn't need any of the additional functionality, I decided to just use Runtime.exec() in this particular case.
jschell
jschell wrote:
So print thos env vars, in your app and when the user does it.I'll look into that. It's a good start.
-IsmAvatar

Runtime.exec and dialog windows

I'm using Runtime.exec to launch an exe that may crash due to runtime errors (such as division by zero). When this appens a dialog window shows up, waiting for the user to close it. (I'm running the program under Win98). Is there a way to avoid this?

I think the only way should be fixing the exe bug!
There is no way, I suppose.
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How do I access open tabs from other devices in Firefox 4 for desktop (windows version)

I want to see the open tabs from other devices but I can't find how to access it.
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I use the windows version.
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NB: When you open a tab in the 'Tabs From Other Computers' window it '''WILL NOT''' remove that tab from the other device.

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The actual version is windows 2003 standard edition 64 bits
The new version will be windows 2003 enterprise edition 64 bits
This difference in windows version between primary and standby servers can cause a problem in the synchronization between primary and standby databases ??
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Loreinn

This difference in windows version between primary and standby servers can cause a problem in the synchronization between primary
and standby databases ??<o:p></o:p>
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database side.<o:p></o:p>

Runtime.exec() opening dos window.

I heard that in newer version of java (>java 1.2 ) if Runtime.exec() is used to execute some native program, a black dos promt is popped up automatically and closed when the execution of the native program is completed.
Will this happen every time I use Runtime.eceX()? is there a way to avoid this opening of dos prompt.

It will vary by os version. Read up on the use of the command or cmd statements from the os help information, and on the os's start command (may not exist in all os's)
Experiment fron the commandline to see what happens.

Feature request for the windows version section..

Does there exist anywhere to raise feature requests for any future releases of MBSA?
The additional system information section of the report, and "windows version", it would be useful if it could include service pack number number, as well as flag it as a vulnerability (red X) if the version/SP level identified is out of Microsoft
support. That would be very useful.

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Runtime.exec() for different Windows versions ?

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