Java Mathematical Operators
this instructables gives u some idea about user input in blueJ
u will require some basic idea of java and blueJ
its quite easy thats all i would like to say so u will learn about java easily from youtube
u will need blueJ software
Open Your Blue J Software
and create a new class
Codes
copy these codes according 2 ur need
Downloads
Enjoy Your Codes
u can also convert these codes into cell phone apk files