ProcessBuilder is FUNKY!!! or is it just me?

Question

I am trying to execute a JAR file from within a ProcessBuilder object. my JAR file accepts command-line parameters. However, as soon as i start passing those parameters the program hangs or doesn't execute anything. Here's my code:
String list[] = {"java","-jar \\program\\java\\update\\CMDLineUpdateDD1.jar -c \\program\\java\\update\\config.xml"};
ProcessBuilder b = new ProcessBuilder(list);
Process p = b.start();
BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line=null;
while((line=input.readLine()) != null) {
      log.info(line);
int exitVal = p.waitFor();What happens is that it works when i just have the 'java' and '-jar' parameters. However, this jar also accepts a few command line parameters like the one shown above. If i add any of those parameters the program executes nothing. it generally exits, but no program has been executed.
I have tried the above variable 'list' as the following:
//all parameters completely separated...
String list[] = {"java","-jar","\\program\\java\\update\\CMDLineUpdateDD1.jar","-c","\\program\\java\\update\\config.xml"};
//separated by parameter, with equal signs...
String list[] = {"java","-jar=\\program\\java\\update\\CMDLineUpdateDD1.jar","-c=\\program\\java\\update\\config.xml"};
//parameters with spaces
String list[] = {"java","-jar \\program\\java\\update\\CMDLineUpdateDD1.jar","-c \\program\\java\\update\\config.xml"};in each case it takes the "java" command and the "jar" parameter, but once i add the "-c" parameter it doesn't respond.
any ideas? thanks!
Edited by: 960093 on Sep 26, 2012 8:08 AM

Answer 1

System.setErr(System.out);i added the above code before i start the process. i now get a little more info, but still as soon as i add the parameters it deadlocks. i get NO output, and it just runs like that.
if i put:
String list[] = {"java","-jar","\\program\\java\\update\\CMDLineUpdateDD1.jar"}i get an error message: "Can't find the config file!" (which is expected and normal, since i didn't give the config file parameter)
but when i add the config file parameter:
String list[] = {"java","-jar","\\program\\java\\update\\CMDLineUpdateDD1.jar","-c", "\\program\\java\\update\\config.xml"};it deadlocks. DANG! this is frustrating
RE: PS-i have a folder in my C: root called 'program' with all my code in it. i got that from a former developer and have never changed it. does that make sense?