Serial port comm app in Processing 3

I require a Processing 3 application that works for macOS. the project will eventually be incorporated into a larger processing 3 project. I require you to make a simple window with one text field. I need to be able to paste text into the text field and then press return. When I push the return key the text will be sent over serial comms. via The [login to view URL](); serial class function. any further questions let me know. you will need the processing 3 Ide and a knowledge of java and javascript.