This is a Runtime Editor for Processing.
Quick Video
(Longer) Walkthrough Video

WHAT'S IT DO?
It enables you to edit public variable values while your program is running, allowing you to see live changes. It then exports the saved values to a .txt file, which automatically loads during the next execution of the program.

FEATURES: 
1) Edit variable values in runtime, see changes live 
2) Export all values or only selected ones to load next time 
3) Types: int, float, String, boolean, Arrays, Objects
4) Simple: Create a RuntimeEditor object and make certain variables 'public' 
5) Embedded color sliders (hue, saturation, brightness, and alpha) 
7) Lightweight: Use RuntimeLoader and a generated String to load values without a .txt file

HOW TO:
Watch Walkthrough Video.
Refer to the included examples.

DOWNLOAD:
https://code.google.com/p/pde-runtime-editor/downloads/list

SUPPORT:
GitHub repo
Please feel free to make this more efficient and add features. If you find any bugs, please file it on the issues tab.

REQUIRES: controlP5 library

Enjoy.