How to run a command line argument

Question

i want to run a command line argument, say for eg......i want to execute the "dir" command on the dos prompt and capture the output.
how can i do this.
actually i want to capture the output of the ping command and write it to a file. can any body plsssssss help

Answer 1

This command runs a ping to "address" and writes the output back to the command line. To capture it, just put strings into an array or do whatever you want with it. If you want to wait until the program completes before reading its input, use p.waitFor().
Process p = Runtime.getRuntime().exec("ping " + address);
BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
String currLine = null;
while((currLine = in.readLine()) != null)
  System.out.println("ping: " + currLine);
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