java for my web -- 2

this is a modification of the code already done java 2 to 4 Im coming in requesting for modification and more documentation Input Example: 90, 3, Y, Y, Y, Y, Y, Y (Number of participants, Number of nights staying at the camp, using lodge, using meeting room, using gym, having tower session, having canoeing session, having team building system) Output An invoice (see a sample invoice on the next page – each of “$[login to view URL]” should be replaced with the computed value for its corresponding item on the invoice) Use a method for each of the specified tasks below: 1. Display an introductory paragraph telling the user what to do 2. Ask the user for a Y or N, ask for them to resubmit input if given something else 3. Determine the subtotal given the user’s input 4. Determine the tax given the subtotal and meal cost 5. Display the final invoice