Read console output

theinlinaung2010

Hi there, I have an executable file which has to run via command line (cmd). I would like to run it from the Processing and read output data (String) from it. How can I write and read data to a console process like this? I am a newcomer here, please don't mind me if I made mistakes.

GoToLoop

The bottom console window of Processing's IDE is for output only.
Only by running an already compiled program from a terminal would allow us to use console input operations!

Nonetheless, there's a class called JOptionPane which can pop-up message & input dialog boxes! <):)

Here's an example from this thread: http://forum.processing.org/two/discussion/869/check-array-contents-with-arraylist

/** 
 * No Repeat ID Input (v1.10)
 * by GoToLoop (2013/Nov)
 * 
 * forum.processing.org/two/discussion/869
 * /check-array-contents-with-arraylist
 */

import static javax.swing.JOptionPane.*;

final StringList ids = new StringList( new String[] {
  "Eric", "Beth", "Katniss"
} 
);

void draw() {
  println(ids);

  final String id = showInputDialog("Please enter new ID");

  if (id == null)   exit();

  else if ("".equals(id))
    showMessageDialog(null, "Empty ID Input!!!", 
    "Alert", ERROR_MESSAGE);

  else if (ids.hasValue(id))
    showMessageDialog(null, "ID \"" + id + "\" exists already!!!", 
    "Alert", ERROR_MESSAGE);

  else {
    showMessageDialog(null, "ID \"" + id + "\" successfully added!!!", 
    "Info", INFORMATION_MESSAGE);

    ids.append(id);
  }
}

Other old threads about it: :bz

http://forum.processing.org/one/topic/slight-miscalculation-with-code-for-discounts
http://forum.processing.org/two/discussion/1724/how-to-create-an-interface-asking-username-and-correct-password-

PhiLho

You should use Java's ProcessBuilder.

I just found an article showing how to use it http://tamanmohamed.blogspot.fr/2012/06/jdk7-processbuilder-and-how-redirecting.html (not read yet...)

danielspecht

Oh, thank's! I was not aware that JOptionPane is working in Processing ;)