How do i use a variable to press a key with robot class

Processing Coding Questions
1

Basically I’m trying to make a function that will type the key i need

Because its a function i give it a string with a variable which is the key i need to press and the robot variable how do i do it?

2

I’m sorry but I don’t understand what is it you try to do.

3

Yea i dont really do too so
I need a function to press the button i need which will do something like this

void SendKey(String KeyINeed, Robot robot) {
  robot.keyPress(KeyEvent.VK_(key);
  robot.keyRelease(KeyEvent.VK_(key);
}

so pressing a key and releasing it

4

Still not sure I get what you want but I guess you are looking for the keyPressed() function.

5

i dont know how to explain it but
i have a function that should press a key that’s specified when it gets called
so the caller looks like this:

Presskey(robot, S)

and the PressKey function should press and release the second variable S in this example

6

hi,
do you use
import java.awt.Robot; ?
where do you want to press a key? in an another app?

7

Yes i am using it.

I want to emulate a keyboard press to make it work in another app

8

ok,
here is an example:

import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.KeyEvent; 

Robot robot;
String  keyString="hello world";
void setup() {

  size(100, 100);
  try { 
    robot = new Robot(); 
  } 
  catch (AWTException ex) {
    System.out.println(ex.getMessage());
  }
  frameRate(1);
}

void draw() {
  sendKeys(robot, keyString);
}

void sendKeys(Robot robot, String keys) {
  for (char c : keys.toCharArray()) {
    int keyCode = KeyEvent.getExtendedKeyCodeForChar(c);
    if (KeyEvent.CHAR_UNDEFINED == keyCode) {
      throw new RuntimeException(
        "Key code not found for character '" + c + "'");
    }
    robot.keyPress(keyCode);
    robot.delay(100);
    robot.keyRelease(keyCode);
    robot.delay(100);
  }
}

run the sketch then go back to processing ide