The addition app uses Flask for front-end and Java for backend.
Requirements: Java Development Kit 8+ Python 2.7 PIP Flask
Init: 1.Download and install JDK 8 2.Download and Install Python 2.7 with PIP 3.Add the Paths to environment variables and restart computer if in windows 4.CD into Addition.app directory 5.Run javac Addition.java 6.Pip install requirements.txt 7.Run Python app.py
uses subprocess pipes for interprocess communication.