Create an application that calculates and displays the total travel expenses for

Question

Create an application that calculates and displays the total travel expenses for a buisness trip. The user must provide the following information
Number of days on the trip
Amount of airfare, if any
Amount of car rental fees, if any
Number of miles driven, if a private vehicle was used
Amount of parking fees, if any
Amount of Taxi charges, if any
Conference or seminar registration fees, if any
Lodging charges, per night

The company reimburses travel expenses according to the following policy:
$37.00 per day for meals
parking fees, up to $10.00 per day
Taxi charges up to $20.00 per day
Lodging charges up to $95.00 per day
If a private vehicle is used, $0.27 per mile driven

The application should calculate and display the following:
Total expenses incurred by the business person
The total allowable expenses for the trip
The excess that must be paid by the business person, if any
The amount saved by the business person if the expenses were under the total allowed

The application should have the following functions:
CalcMeals: Calculates and returns the amount reimbursed for meals
CalcMileage: Calculates and returns the amount reimbursed for mileage driven in a private vehicle
CalcParkingFees: Calculates and returns the amount reimbursed for parking fees.
CalcTaxiFees: Calculates and returns the amount reimbursed for taxi charges
CalcLodging: Calculates and returns the amount reimbursed for lodging.
CalcTotalReimbursement: Calculates and returns the total amount reimbursed
CalcUnallowed: Calculates and returns the total amount of expenses that are not allowable, if any. These are parking fees that exceed $10.00 per day, taxi charges that exceed $20.00 per day and lodging charges that exceed $95.00 per day.
CalcSaved: Calculates and returns the total amount of expenses under the allowable amount, if any. For example, the allowable amount for lodging is $95.00 per day. If a business person stayed in a hotel for $85.00 per day for five days, the savings would be $50.00.
Input validation:
Do not accept negative numbers for any dollar amount or for miles driven in a private vehicle. Do not accept numbers less than 1 for the number of days.

Explanation / Answer

import static java.lang.Integer.*; import static java.lang.Float.*; class expenses { public float Saved, unallowed, Total, total, notall, saving; //Total=0; //total=0; public float CalcMeals(int days) { float meals=days*37; TotalReimb(meals); return meals; } public float CalcMileage(float miles) { float vehicle=miles*0.27f; TotalReimb(vehicle); return vehicle; } public float CalcParkingFees(int days, float park) { float prkng=park; Totalexp(prkng); float prkall=days*10; TotalReimb(prkall); if(prkng>prkall) { notall=prkng-prkall; Unallowed(notall); return prkall; } else { saving=prkall-prkng; Saved(saving); return prkall; } } public float CalcTaxiFees(int days, float taxifee) { float taxiall=days*20; float taxi=taxifee; Totalexp(taxi); TotalReimb(taxiall); if(taxi>taxiall) { notall=taxi-taxiall; Unallowed(notall); return taxiall; } else { saving=taxiall-taxi; Saved(saving); return taxiall; } } public float CalcLodging(int days, float lodge) { float lodgall=days*95; Totalexp(lodge); TotalReimb(lodgall); if(lodge>lodgall) { notall=lodge-lodgall; Unallowed(notall); return lodgall; } else { saving=lodgall-lodge; Saved(saving); return lodgall; } } public void Totalexp(float tote) { Total=Total+tote; System.out.println(Total); } public float CalcTotalexpenses(float airfare, float carent, float seminarfee) { Total=Total+airfare+carent+seminarfee; return Total; } public void TotalReimb(float totr) { total=total+totr; System.out.println(total); } public float CalcTotalReimbursement() { return total; } public void Unallowed(float unall) { unallowed=unallowed+unall; } public float CalcUnallowed() { return unallowed; } public void Saved(float saving) { Saved=Saved+saving; } public float CalcSaved() { return Saved; } } class travel { public static void main(String[] args) { expenses obj=new expenses(); float meals=obj.CalcMeals(parseInt(args[0])); System.out.println("The amount reimbursed for meals is "+meals+"$"); float vehicle=obj.CalcMileage(parseFloat(args[3])); System.out.println("The amount reimbursed for private vehicle is "+vehicle+"$"); float prkng=obj.CalcParkingFees(parseInt(args[0]), parseFloat(args[4])); System.out.println("The amount reimbursed for parking fees is "+prkng+"$"); float taxi=obj.CalcTaxiFees(parseInt(args[0]), parseFloat(args[5])); System.out.println("The amount reimbursed for taxi is "+taxi+"$"); float lodge=obj.CalcLodging(parseInt(args[0]), parseFloat(args[7])); System.out.println("The amount reimbursed for lodging is "+lodge+"$"); float expense=obj.CalcTotalexpenses(parseFloat(args[1]), parseFloat(args[2]), parseFloat(args[6])); System.out.println("The amount he expended for total trip is "+expense+"$"); float reimb=obj.CalcTotalReimbursement(); System.out.println("The total amount reimbursed for him is "+reimb+"$"); float unall=obj.CalcUnallowed(); System.out.println("The amount he expended more than allowed is "+unall+"$"); float saved=obj.CalcSaved(); System.out.println("The amount he saved overall is "+saved+"$"); } }

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