i think you should doit like that
String[] cmd = { "/bin/sh","/home/priyatam/timesetter.sh" };
Process p = Runtime.getRuntime.exec(cmd);
BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line=null;
while((line=input.readLine()) != null) {
log.warn(line);
}
int exitVal = process.waitFor();