java runtime.getRuntime.exec( cmd ) with long parameters

Question

I\'m making a frontend for a command line app. It has a very long The command line is something simliar to this:

public String liveShellCommand(){

  String cmd         


        

Answer 1

+1 for sending the arguments through as an array.

Sending everything through as a string may work on some systems but fail on others.

Process start = Runtime.getRuntime().exec(new String[]
{ "java", "-version" });
BufferedReader r = new BufferedReader(
     new InputStreamReader(start.getErrorStream()));
String line = null;
while ((line = r.readLine()) != null)
{
    System.out.println(line);
}

I know you have said that you tried sending the arguments through as an array of Strings without success but were you receiving a different type of error? If that other program has a log you might want to see what is going wrong. You could write a simple script that outputs the parameters it was called with to test what is actually coming through.