java code to create a fitness app

I am currently working on java code to create a fitness app. I am using the Eclipse IDE. I will
send you the code that is done already and I want you to finish it. The app so far has the ability
to ask the user for them to create an account and log in, then for the user to input their
information such as height, weight, age, and gender. Then after this is input, their BMI is
calculated to see if they are overweight, perfectly weighted, or underweight. Whatever
classification they are given, then they are sent to a new panel to ask them how many pounds
they want to gain or lose per week depending on what classification they are given. Then when
this choice is made, there is a new screen asking how many days per week they can work out.
This is the part where you need to take over. So far there is roughly 900 lines of code done, but
it must be completed following these guidelines:
- After the user picks how many days per week they can work out, there must be a
calculation done to tell the user how many calories they must eat per day.
- I will personally give you the formulas to use to calculate this information.
- Once their calories are calculated depending on if the person needs to lose weight or
gain weight, then the app must take the user back to the main menu.
- In the main menu, there must be 2 options: meal plans and workouts
- Depending on what the user chooses, program the app to go to a new page and indicate
in the code in these new pages where I myself can input more code on what meals and
workouts the user must eat and do.