please help me with class file !!

I was asked to write a program that calculates the interest money.
The program will include 3 class files (in one java file)

The first one will ask the user to deposit the amount of money that they want to put in their bank account, this one is with the main gate

The sencond one will calculate the amount of the input money after 5 years with the interest rate of 11%

The third one will calculate the amount of the input money after 5 years with the interest rate of 6%

* the teacher also said "remember to pass the value"? and that confuse me even more!

Can you please please write the program for me? I was absent that day so i have no idea what class file is and how to create an "asking user to input their money" (input method maybe), although i do know how to calculate the money.

PLease please help me! i was reading the book but i still have no idea how to create one. Thanks a lot, thanks a bunch

Help yourself, we're no Do_My_Homework_Bots. Ask your teacher or class mates.
http://java.sun.com/docs/books/tutor...ted/index.html