Write a program that produces an expense report for a trip to Lagos, Nigeria. Use the Internet to research the cost to travel to Lagos. The program requires the traveler's last name and convert the first character of the travels last name to uppercase and the rest to lowercase (this should happen regardless of how the user type the information). Concatenate the last name with the string "Expense Report" to produce the title of the report. The program should accept the airline fare, the number of nights at a local hotel (do your research), and the dollar amount a user wants to convert to Nigerian Naira. Ensure the currency exchange includes a 3% processing fee and 5% penalty charge when exchanging U. S dollars to Naira.
Note: Make sure your program used:
The decimals do not need to be aligned but they align the = signs for readability.
Constants and variables
Input data
Calculation includes totals
Output display with readable formatting
Use the NumberFormat class to format the monetary values and percentages.
String class
Check out the Payroll. java file that contains most of the syntax to help you get started.

Following are the code to this question:

import java.text.*;//import package

import java.util.*;//import package

public class ExpenseReportGenerator//defining class ExpenseReportGenerator  

{

private static double ONE_USD_TO_NAIRA = 380, PROCESSING_FEE_PERCENTAGE = 3, PENALTY_CHARGE_PERCENTAGE = 5, COST_PER_NIGHT_DOLLAR = 112;//defining double variable as a static type

public static void main(String[] ars) //main method

{

   String last_Name,converted_Amount;//defining a String variable

   double airline_Fare,HotelStaycost,amountToConvert,total_Expenses,processingFeeCharged,penaltyCharged,amountLeftToConvert;

   int no_Nights;//defining integer variable

Scanner sob = new Scanner(System.in);//creating Scanner class object

System.out.println("Enter your last name:");//print message

last_Name = sob.next();//input value

last_Name = last_Name.substring(0, 1).toUpperCase() + last_Name.substring(1, last_Name.length()).toLowerCase(); //holding last_Name value

System.out.println("Enter airline fare:");//print message

airline_Fare = sob.nextDouble();//input value

System.out.println("Enter the number of nights you want to stay at local hotel:");//print message

no_Nights = sob.nextInt();//input value

System.out.println("Enter the the amount you want to convert:");//print message

amountToConvert = sob.nextDouble();//input value

NumberFormat nF = new DecimalFormat("#0.00");//creating NumberFormat class object

sob.close();//close input values

processingFeeCharged = amountToConvert * PROCESSING_FEE_PERCENTAGE / 100;//calculating processingFeeCharged

penaltyCharged = amountToConvert * PENALTY_CHARGE_PERCENTAGE / 100;//calculating penaltyCharged

amountLeftToConvert = amountToConvert - processingFeeCharged - penaltyCharged;//calculating amountLeftToConvert

converted_Amount = nF.format(amountLeftToConvert * ONE_USD_TO_NAIRA);//calculating converted_Amount

HotelStaycost = COST_PER_NIGHT_DOLLAR * no_Nights;//calculating HotelStaycost

System.out.println("\t\t " + last_Name + " Expense Report \t\t");//print values

System.out.println("Airline Fare: $" + airline_Fare);//print values

System.out.println("Total cost for " + no_Nights + " nights: $" + HotelStaycost + " (" + no_Nights + " x $" + COST_PER_NIGHT_DOLLAR + ")");//print values

System.out.println("Amount to be converted: $" + amountToConvert);//print values

System.out.println("Processing fee charged: $" + processingFeeCharged);//print values

System.out.println("Penalty charged: $" + penaltyCharged);//print values

System.out.println("Remaining amount to be converted: $" + amountLeftToConvert + " = " + converted_Amount + " Naira");//print values

total_Expenses = airline_Fare + HotelStaycost + amountLeftToConvert;//calculating total_Expenses

System.out.println("Total expenses (incl. remaining converted amount): $" + total_Expenses + " = " + nF.format(total_Expenses * ONE_USD_TO_NAIRA) + " Naira");//print values

}

}

Output:

Please find the attached file.

Explanation:

In this code, a class "ExpenseReportGenerator" is declared in which the several double variables as the static type is declared that hold the values. Inside the main method, the "double, string, and the integer" variable is declared, which uses the input method to input value from the user-end and pass it into the number list, and uses the print its calculated values.  

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