Running an Executable from a JAVA API in LINUX

Question

Hi,
I want to run a C++ executable from my JAVA API in Linux. This is the sample of the code which i
have used
String[] arguments = new String[5] ;
arguments[0] = "/usr/local/code/fun/dcmdump";
arguments[1] = "+f";
arguments[2] = "/usr/local/code/fun/240.dcm";
arguments[3] = "+W";
arguments[4] = "/usr/local/code/fun";
Process p = Runtime.getRuntime().exec(arguments);
On running the test file, the program seems to hang there. dcmdump is the name of my c++ executable and arguments [1] - [4] are its inputs. dcmdump should accepts these inputs and dump the contents of the file 240.dcm into the path mentioned by the last argument.
But my program jst hangs. Is the the correct way to go about??
Any suggestions or ideas r welcome!!
Please let me know
Thanks
Dhaval

Answer 1

Hi
I did the following
String[] cmd ={"/bin/sh","-c","/usr/local/code/fun/dcmdump","+f","/usr/local/code/fun/240.dcm","+W","/usr/local/code/fun"};
Process p = Runtime.getRuntime().exec(cmd);
When i execute my application, i see the following output
[root@voltaire fun]# java TestRead2
$dcmtk: dcmdump v3.5.3 2004-05-27 $
dcmdump: Dump DICOM file and data set
usage: dcmdump [options] dcmfile-in...
parameters:
dcmfile-in DICOM input filename to be dumped
general options:
I try to write the arguments in the command line when i execute but still get the same output.
I dont think dcmdump is receving any arguements..
Executing /bin/sh does it mean you have to mention the arguements in the command in the same manner that i have the String[] cmd??
PLease let me know..
Also i have put a Buffered reader to capture the output of dcmdump but I dont think i have reached my application has reached thr as yet. The code i have written is
// put a BufferedReader on the output
InputStream inputstream = p.getInputStream();
InputStreamReader inputstreamreader = new InputStreamReader(inputstream);
BufferedReader bufferedreader = new BufferedReader(inputstreamreader);
// read the output
String line;
while ((line = bufferedreader.readLine()) != null) {
System.out.println(line);
Please let me know your suggestions/ideas.
thanks