try{

            Process proc= Runtime.getRuntime().exec(commandBuff.toString());//Gets a Process object for managing the javac subprocess

            InputStream stderr = proc.getErrorStream();//Gets the error stream of the javac subprocess.

            BufferedReader br = new BufferedReader(new InputStreamReader(stderr));

            String line = null;

            while ( (line = br.readLine()) != null){

                log(line);//Logs the output of the javac subprocess

            }

            int exitVal = proc.waitFor();//Waits for the javac subprocess to complete, and returns the exit value for the javac subprocess. Normally, an exit value of 0 indicates success; any nonzero value indicates an error.

             if(exitVal!=0){

                 log("Javac Process exitValue: " + exitVal);

                 System.err.println("Javac Process exitValue: " + exitVal);

             }else

                 log(version.getVersionName()+" compilation has completed:-)");

        }catch(Exception e){

            log(e);

            System.err.println(e);

        }