GPA Calculator Stopped working when input number *

Project Repository:

https://github.com/rockstar96969696/GPA_Calculator

Project Name:

GPA Calculaor

Download GPA Calculator App

https://github.com/rockstar96969696/GPA_Calculator/raw/master/GPA%20Calculator%20v%201.7%20.apk

My GitHub Account

https://github.com/jonybraim

Expected behavior

App should show the error message if we put the wrong input, and it should guide the user where he put the wrong input without crashing

Actual behavior

App stopped working when i put the number of sny subject * and calculate my GPA. The app is crashed.

How to reproduce

Download and open the and lead to the calculator screen as shown in this screenshot.

Now put the credits hours and numbers to * and press the button as shown in this screenshot.

• GPA Calculator: Version 1.7
• Operating System: Android Nougat 7.1