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    <p>Trying to replicate your problem, I successfully run commands with much much much much longer argument line.<br> Try to insert </p> <pre><code> try { p.waitFor(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } </code></pre> <p>after you execute your command (in place of those commented <code>sleep() ...</code>) to make sure you allow it to finish. </p> <p>There is actually another problem with this approach (which I initially thought may be your problem) - if your process writes enough data to fill it's console buffer it may block, as described here (javadoc for process): </p> <blockquote> <p>Because some native platforms only provide limited buffer size for standard input and output streams, failure to promptly write the input stream or read the output stream of the subprocess may cause the subprocess to block, or even deadlock.</p> </blockquote> <p>so you should read it first: </p> <pre><code>InputStream is=process.getInputStream(); BufferedReader br= new BufferedReader(new InputStreamReader(is)); String line=new String(); while ((line=br.readLine())!=null) System.out.println (line); //do something real here </code></pre> <p>If you do not want to read your bat output (and I do not see you do) you can skip all that and just run your command in it's separate window:<br> <code>cmd /c start \"my command\" c:/temp/startup.bat args</code></p> <p>(note about second form with working dir, use <code>cmd /c startup.bat arguments</code> to get rid of that 'not found' exception)</p>
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    1. POin Java, why can't i pass an invocation string longer than 94 chars to Runtime.getRuntime().exec()?
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    1. COthanks for the very informative response. have you tried to invoke a bat file with the echo statement as i described above? i noticed that it's working for some commands but not for the echo for some reason. in response to some of your comments: 1) the echo does not wait for input so there is no reason to open the input stream. 2) i don't want to wait for the process to complete - i need to kill it after a few seconds (my problem is that the invocation immediately fails 3) is it a must or better to invoke Cmd rather than specify the name of the .bat file?
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    2. COyes I run it with exact `echo %*`. As soon as it starts to write to console (and commands are echoed to console) it will fail (if you do not read it). Try with `@echo` or call with `cmd /q /c`. ad 1) This is a bit convoluted, this `InputStream` is actually **output** of your command. ad 2) make sure it does not write to stdout - use `@echo off` or `cmd /q` or use `ProcessBuilder` to redirect it's streams. ad 3) it was the only way I was able to run it without specifying full path. Otherwise I believe they are effectively equal (less control on cmd.exe invocation parameters)
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