Java.lang - process builder

Question

I want to execute the following command inside my java program
rep_cmd [file1] -text [file2]
The above command belongs to an application installed on my PC.
The above command when executed in the command prompt works fine.
but it does not work inside my java program
here is my code:
public class ProcBuild
public static void main(String args[]) throws IOException, InterruptedException
String cmdLine="cmd /c rep_cmd log.wgl -text log1.txt";
ProcessBuilder pr=new ProcessBuilder(cmdLine);
pr.start();
and here is my error message with output:
run:
Exception in thread "main" java.io.IOException: Cannot run program "cmd /c "rep_cmd log.wgl" -text "log1.txt"": CreateProcess error=2, The system cannot find the file specified
     at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
     at ProcBuild.main(ProcBuild.java:23)
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
     at java.lang.ProcessImpl.create(Native Method)
     at java.lang.ProcessImpl.<init>(ProcessImpl.java:188)
     at java.lang.ProcessImpl.start(ProcessImpl.java:132)
     at java.lang.ProcessBuilder.start(ProcessBuilder.java:1021)
     ... 1 more
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)
Edited by: user13286843 on Jan 20, 2012 9:20 AM

Answer 1

>
Exception in thread "main" java.io.IOException: Cannot run program "cmd /c "rep_cmd log.wgl" -text "log1.txt"":
>
You are passing the entire command as one String and the string is being interpreted as the name of the program and no arguments.
See the Javadocs for ProcessBuilder. It has an example that shows how to pass the cmd, and each argument as separate Strings.
Get the Javadoc example working first and then substitute your command and arguments.
Starting a new process which uses the default working directory and environment is easy:
Process p = new ProcessBuilder("myCommand", "myArg").start();
Here is an example that starts a process with a modified working directory and environment:
ProcessBuilder pb = new ProcessBuilder("myCommand", "myArg1", "myArg2");
Map<String, String> env = pb.environment();
env.put("VAR1", "myValue");
env.remove("OTHERVAR");
env.put("VAR2", env.get("VAR1") + "suffix");
pb.directory(new File("myDir"));
Process p = pb.start();