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POGetting command prompt output instantly?
 

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  1. POGetting command prompt output instantly?
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    <p>Probably a misleading title, but thanks to people on my other question, I got my program somewhat working, though now not sure what to do.</p> <p>Here is my method to run command prompt commands and return the output</p> <pre><code>public static String cmdExec(String cmdLine) { String line; String output = ""; try { Process p = Runtime.getRuntime().exec(cmdLine); BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream())); while ((line = input.readLine()) != null) { output += (line + '\n'); } input.close(); } catch (Exception ex) { ex.printStackTrace(); } return output; } </code></pre> <p>It works how I want it to work, though now when I run this method, it is going to wait until everything is done, and then return the output, which is not what I want.</p> <p>I made a ping flooding method that uses the cmdExec method. Here is how I call cmdExec()</p> <pre><code>String[] input = ipTextField.getText().split(":"); if(input.length == 2) { System.out.println(cmdExec("cmd /c ping " + input[0] + " -t -n " + Integer.parseInt(input[1]))); </code></pre> <p>So now for instance, if I type "127.0.0.1:3" in my program, it's going to send 3 packets to localhost. Now the problem here is, instead of printing out the lines I get as output from command prompt 1 by 1, it's going to wait until all the 3 packets are sent, and then print the output full output.</p> <p>If I type "ping 127.0.0.1 -t -n 3" in command prompt, it's going to print the reply 1 by 1, not all just at once, so how would I go about doing the same in my program?</p>
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