3) Class name: ExpensesFile.java (main program) and Expenses.java (class file) This is a continuation of Exercise...

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3) Class name: ExpensesFile.java (main program) and Expenses.java (class file) This is a continuation of Exercise 2 from week 5 practical exercises. Import a copy of Expenses.java that you developed for Exercise 2 Week 5 into your week 7 project in Eclipse. You will write a new main program for this exercise. Make the following changes to the Expenses class: Kevin Malone has realised that it would be easier for him to enter the weekly sales and expenses figures for each month into a text file that your program could then process. This will allow Kevin to store the data for several months in one file and process all months without re-entering data into the program each time he runs it. To achieve this, some changes are needed to the Expenses class and a new main program will need to be written. a. Add a data field named month - the name of the month for the expenses [a string] b. Add accessor and mutator methods for the month data field C. Add a constructor that takes a single argument (the name of the month) and sets all other data fields to 0 Write a main program named Expenses File.java that reads the data from the text file MalonesCones.txt instead of from the keyboard (ie, your program will no longer ask the user for the month name, number of weeks in the month or the weekly sales and expenses values since these are now in the text file), and that instantiates an Expenses object for each month that is read from the file. To do this, read the name of the month from the file; instantiate an Expenses object (using the constructor you created in part c. above) for the month; read sales and expenses data for each week of the month from the file; display the month name, balance, the total of income, total of expenditure, and Keleven from the month's expense object as shown in the example output of Figure 2. Note: Even though there are multiple months of data in the text file there is no need to 'remember' all Expenses objects that are created, hence, an array/arraylist is not to be used. An example of the file MalonesCones.txt has been included in this week's practical zip file. MalonesCones.txt contains data in the following format (suggestion: open the file in a text editor to confirm that you understand the structure and organisation of the data in the file): February 4 200 300 300 450 month name<space>number of weeks in month<eoln> sales week 1<space>expenses week 1<eoln> sales week 2<space>expenses week 2<eoln> sales week 3<space>expenses week 3<eoln> sales week 4<space>expenses week 4<eoln> <repeat pattern for subsequent months> 350 250 275 275 Make sure that your Java program checks that the file exists before attempting to read from it. If the file does not exist then handle this situation by informing the user that the file does not exist and then obtain a new file name/location from the user. You should also ensure that your code works correctly for different length files (ie, the input files used for marking your program may contain more or less lines of text than the example file provided). Figure 2 For Month of February: Balance: Total Sales: Total Expenses: Keleven: $-150.00 $1125.00 $1275.00 $150.00 For Month of March: Balance: Total Sales: Total Expenses: Keleven: $25.00 $1325.00 $1300.00 $0.00 For Month of April: Balance: $-256.80 Total Sales: $1103.05 Total Expenses: $1359.85 Keleven: $256.80 2. One of the accountant's at Dunder Mifflin, Kevin Malone, investigates the option of obtaining a bank loan to help pay off his gambling debt (https://www.youtube.com/watch?v=a86Pkl|WbnM). He tells the bank that he intends to use the loan to start an ice-cream business, named Malone's Cones, which will sell delicious ice- cream such as Fudge the Magic Dragon. Kevin needs a simple program that keeps track of his monthly expenditure for the business so that he doesn't accidently spend too much of the money - the balance at the end of the month should be either 0 or a positive value if he sells at least as much as he spends. Write an Expenses class that stores the monthly balance [a double], total of income (total of all sales or incoming moneys) for the current month [a double], total of expenditure (total of all outgoing money) for the current month [a double]. The class should have a set method for the balance data field and get methods for all data fields. The class should also have methods for adding the amount of a sale to the balance, subtracting the amount of an expenditure from the balance, accumulating the total of all incoming money in the month, accumulating the total of expenditure in the month. The class will also need a method to calculate Keleven to be able to balance the expenses if necessary (see note below). What is Keleven? Even though Kevin wants the balance to be 0 or positive at the end of the month he recognises that sometimes he may have essential purchases at different times (for example, pizza, hot dogs or pie) which means he may spend more than he earns from the ice-cream sales (ie, the balance will be less than 0). To balance the accounts in his daytime job at Dunder Mifflin Kevin employs a unique accounting method he calls a Keleven; he believes that a Keleven can be used in your program to balance his expenses each month when needed. Keleven is the amount added to the balance at the end of the month to ensure that the balance becomes 0. Write a program to test the Expenses class by: creating an expense object for the current month with a starting balance of $0, entering sales and expenditures on the expense object for each week in the month. At the end of the month display the balance, the total of income, total of expenditure, and Keleven from the expense object. Ensure that appropriate validation of user input is implemented. Figures 3, 4, 5 represent example executions of the program to assist you understand what the program needs to do: ● How many weeks this month? Sales & Expenditure for week 1: 200 300 Sales & Expenditure for week 2: 300 450 Sales & Expenditure for week 3: 350 250 Sales & Expenditure for week 4: 275 275 Month Balance: $-150.00 Total Sales: $1125.00 Total Expenses: Keleven: $1275.00 $150.00 Figure 3 How many weeks this month? 5 Sales & Expenditure for week 1: 200 200 Sales & Expenditure for week 2: 150 150 Sales & Expenditure for week 3: 350 400 Sales & Expenditure for week 4: 400 350 Sales & Expenditure for week 5: 200 200 Month Balance: $0.00 Total Sales: Total Expenses: Keleven: $1300.00 $1300.00 $0.00 4 Figure 4 How many weeks this month? Sales & Expenditure for week 1: 300 200 Sales & Expenditure for week 2: 450 300 Sales & Expenditure for week 3: 250 350 Sales & Expenditure for week 4: 275 275 Month Balance: $150.00 Total Sales: $1275.00 Total Expenses: $1125.00 Keleven: $0.00 Figure 5 3) Class name: ExpensesFile.java (main program) and Expenses.java (class file) This is a continuation of Exercise 2 from week 5 practical exercises. Import a copy of Expenses.java that you developed for Exercise 2 Week 5 into your week 7 project in Eclipse. You will write a new main program for this exercise. Make the following changes to the Expenses class: Kevin Malone has realised that it would be easier for him to enter the weekly sales and expenses figures for each month into a text file that your program could then process. This will allow Kevin to store the data for several months in one file and process all months without re-entering data into the program each time he runs it. To achieve this, some changes are needed to the Expenses class and a new main program will need to be written. a. Add a data field named month - the name of the month for the expenses [a string] b. Add accessor and mutator methods for the month data field C. Add a constructor that takes a single argument (the name of the month) and sets all other data fields to 0 Write a main program named Expenses File.java that reads the data from the text file MalonesCones.txt instead of from the keyboard (ie, your program will no longer ask the user for the month name, number of weeks in the month or the weekly sales and expenses values since these are now in the text file), and that instantiates an Expenses object for each month that is read from the file. To do this, read the name of the month from the file; instantiate an Expenses object (using the constructor you created in part c. above) for the month; read sales and expenses data for each week of the month from the file; display the month name, balance, the total of income, total of expenditure, and Keleven from the month's expense object as shown in the example output of Figure 2. Note: Even though there are multiple months of data in the text file there is no need to 'remember' all Expenses objects that are created, hence, an array/arraylist is not to be used. An example of the file MalonesCones.txt has been included in this week's practical zip file. MalonesCones.txt contains data in the following format (suggestion: open the file in a text editor to confirm that you understand the structure and organisation of the data in the file): February 4 200 300 300 450 month name<space>number of weeks in month<eoln> sales week 1<space>expenses week 1<eoln> sales week 2<space>expenses week 2<eoln> sales week 3<space>expenses week 3<eoln> sales week 4<space>expenses week 4<eoln> <repeat pattern for subsequent months> 350 250 275 275 Make sure that your Java program checks that the file exists before attempting to read from it. If the file does not exist then handle this situation by informing the user that the file does not exist and then obtain a new file name/location from the user. You should also ensure that your code works correctly for different length files (ie, the input files used for marking your program may contain more or less lines of text than the example file provided). Figure 2 For Month of February: Balance: Total Sales: Total Expenses: Keleven: $-150.00 $1125.00 $1275.00 $150.00 For Month of March: Balance: Total Sales: Total Expenses: Keleven: $25.00 $1325.00 $1300.00 $0.00 For Month of April: Balance: $-256.80 Total Sales: $1103.05 Total Expenses: $1359.85 Keleven: $256.80 2. One of the accountant's at Dunder Mifflin, Kevin Malone, investigates the option of obtaining a bank loan to help pay off his gambling debt (https://www.youtube.com/watch?v=a86Pkl|WbnM). He tells the bank that he intends to use the loan to start an ice-cream business, named Malone's Cones, which will sell delicious ice- cream such as Fudge the Magic Dragon. Kevin needs a simple program that keeps track of his monthly expenditure for the business so that he doesn't accidently spend too much of the money - the balance at the end of the month should be either 0 or a positive value if he sells at least as much as he spends. Write an Expenses class that stores the monthly balance [a double], total of income (total of all sales or incoming moneys) for the current month [a double], total of expenditure (total of all outgoing money) for the current month [a double]. The class should have a set method for the balance data field and get methods for all data fields. The class should also have methods for adding the amount of a sale to the balance, subtracting the amount of an expenditure from the balance, accumulating the total of all incoming money in the month, accumulating the total of expenditure in the month. The class will also need a method to calculate Keleven to be able to balance the expenses if necessary (see note below). What is Keleven? Even though Kevin wants the balance to be 0 or positive at the end of the month he recognises that sometimes he may have essential purchases at different times (for example, pizza, hot dogs or pie) which means he may spend more than he earns from the ice-cream sales (ie, the balance will be less than 0). To balance the accounts in his daytime job at Dunder Mifflin Kevin employs a unique accounting method he calls a Keleven; he believes that a Keleven can be used in your program to balance his expenses each month when needed. Keleven is the amount added to the balance at the end of the month to ensure that the balance becomes 0. Write a program to test the Expenses class by: creating an expense object for the current month with a starting balance of $0, entering sales and expenditures on the expense object for each week in the month. At the end of the month display the balance, the total of income, total of expenditure, and Keleven from the expense object. Ensure that appropriate validation of user input is implemented. Figures 3, 4, 5 represent example executions of the program to assist you understand what the program needs to do: ● How many weeks this month? Sales & Expenditure for week 1: 200 300 Sales & Expenditure for week 2: 300 450 Sales & Expenditure for week 3: 350 250 Sales & Expenditure for week 4: 275 275 Month Balance: $-150.00 Total Sales: $1125.00 Total Expenses: Keleven: $1275.00 $150.00 Figure 3 How many weeks this month? 5 Sales & Expenditure for week 1: 200 200 Sales & Expenditure for week 2: 150 150 Sales & Expenditure for week 3: 350 400 Sales & Expenditure for week 4: 400 350 Sales & Expenditure for week 5: 200 200 Month Balance: $0.00 Total Sales: Total Expenses: Keleven: $1300.00 $1300.00 $0.00 4 Figure 4 How many weeks this month? Sales & Expenditure for week 1: 300 200 Sales & Expenditure for week 2: 450 300 Sales & Expenditure for week 3: 250 350 Sales & Expenditure for week 4: 275 275 Month Balance: $150.00 Total Sales: $1275.00 Total Expenses: $1125.00 Keleven: $0.00 Figure 5

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PROGRAMCODE Note All Java files and MalonesConestxt must be in same directory or location to get Currect Output Expensesjava public class Expenses private String month private double monthbalace 0 pri... View the full answer