Assistance with Java Programming

Write a program that will accept numbers from a user, validates the input data, and performs some basic statistics on the number set.

Requirements

1. Prompt the user to enter 5 numbers between 0-100

2. Use exception handling and validation while accepting user input

3. Find the average of all the numbers

4. Find the smallest number

5. Find the largest number

6. Implement a loop to run the program again if the user wishes

I would supply what I have done so far, but it is a mess.