Getting User input

Processing Coding Questions
9

Here you can see an example suing the scanner: http://happycoding.io/examples/java/hello-world/higher-lower-random-computer-player

However, if you are using processing, key events would be handled by your sketch. So, with this in mind, you can do something like this (It will only work after the sketch gains focus aka. you need to click on the sketch before you start taping)

Kf



final String INIT_MSG="Start typing";
String msg=INIT_MSG;

void setup() {
  size(600, 400);
  
}

void draw() {
  background(0);
  fill(255);
  text(msg, 100, 100);
  
  fill(0,250,0);
  text("Mouse click to reset message", 100, height*0.8);
}

void mousePressed() {
  msg=INIT_MSG;  //Reset message, prepare for a new message
}

void keyPressed() {

  //Prepare when writing a new message. Next resets message container
  if (msg.equals(INIT_MSG)) {
    msg="";
  }

//Detects only alphanumeric chars
  if ( (key>='a' && key<='z') ||
    (key>='a' && key<='z') ||
    (key>='0' && key<='9') 
    ) {
    msg+=key;
  }
}