Executing a OS command in Java and capture the stdout

 Process proc = Runtime.getRuntime().exec("ls");
 InputStream is = proc.getInputStream();
 DataInputStream in = new DataInputStream(is);
 BufferedReader br = new BufferedReader(new InputStreamReader(in));
 String line = null;
 out.write("result<br/>");
 while ( (line = br.readLine()) != null) {
  out.write(line);
  out.write("<br/>");
 }
 
 out.write("end result<br/>");