Hello, this assignment is based on this program, which is divided into two class files: https://pastebin.com/KwVg9G7C . Thank you for your help on this.

Problem Summary

The home mortgage loan company that you wrote the Topic 11 program for would like you to expand the program to process a data file. They would like to have a program that will help them determine how much money they will earn in interest from a set of loans they have issued. Each line of the data file will contain a loan number, a loan amount, an annual interest rate, and a loan term.

Test Data Files

loanData1.txt

112233 200000 6.5 360 445566 155555 5.25 240

loanData2.txt

111111 111111 1.1 120 222222 222222 2.22 240 333333 300000 3.3 360 444444 340000 4.44 180 555555 350000 5 300

loanData3.txt

777777 700000 3.7 360 888888 180000 4 240 999999 999999 2.2 300

You will write a program to:

Read data from a file and determine the total interest paid on each loan. NOTE: You may assume all file data will be valid (no error checking necessary)

Provide a report on the loan company profits.

NOTE: Include file and method JavaDoc comments.

The program will contain two separate classes:

The first class will be the same ModLoan class you defined for Topic 11 part B

The second class will be the class that contains the main method

This class will be different from the Topic 11 main class, and is now called CalcInterestProfits

Delete all the NetBeans template code in this class, and replace it with the following template code to start:

import java.util.Scanner;

import java.io.*;

public class CalcInterestProfits {

public static void main(String[] args) throws IOException {

final String LOG_FILENAME = "log.txt";

Scanner keyboard = new Scanner(System.in);

String filename;

File inFile = null;

Scanner fileReader = null;

// Add additional variable declarations here

System.out.println("Enter input data filename:");

filename = keyboard.next(); //

// Insert more code here

}

}

Tests 1 & 2: Read data from one line of a data file, use it to instantiate an object, and display the data in the object

Within the CalcInterestProfits class: In the variables section of the template code: o Define a ModLoan reference variable and initialize it to null. o Define variables to hold the data read from the file.

After the template code that reads a filename from the user, open the input text data file as follows: Using the already defined File and Scanner variables from the template, add more code after the lines that read a filename from the user that will: o Instantiate a File object for the file whose name was input by the user. o Instantiate a Scanner object that can be used to read the file. NOTE: No exception handling will be implemented yet.

Read each of the 4 data items from the first line of the file only.

Using the defined ModLoan reference variable, instantiate a ModLoan object with the data read from the file line as the arguments to the constructor.

To confirm that the read worked correctly, call the displayLoanTerms() method with the ModLoan object to display the data from the line read: Loan 112233 is for $200000.00 at 6.50% APR, to be paid over 360 month(s)

Close the file.

Test 3 & 4: Read all of the lines in the data file and display them

Within the CalcInterestProfits class:

Add loop around the code that:

o Reads the data from one line of the file

o Instantiates a ModLoan object

o Calls displayLoanTerms() to display the data stored in the Loan object so that it reads and displays the data from all lines in the data file. NOTE: The loop should work no matter how many lines are in the file.

Test 5 & 6: Display a message with the number of lines read

Within the CalcInterestProfits class:

Add code to the loop keep track of how many lines are read

After all data in the file has been read and displayed, display another message, including the filename and number of lines read, as follows:

Done reading file loanData1.txt -- 2 lines of data read

Test 7 & 8: Compute monthly payments and interest paid for the loan object. Total the interest paid on all loan objects.

Within the CalcInterestProfits class:

Within the file reading loop, after the data in the Loan object is displayed:

o Call the computeMonthlyPayment()method with the object, and save the returned monthly payment for the loan.

o Call the computeTotalInterest()method with the object and save the returned interest for the loan

o Keep track of the total interest from all loans

After the loop, display a blank line, followed by the total interest, as follows:

Total interest to be collected on all loans: $ 351101.57

Test 9: Implement exception handling if the input file cannot be opened

Within the CalcInterestProfits class:

Remove the following clause from the main method header. throws IOException

The IOExceptions will now need to be handled

Implement file exception handling:

o Add a try block to determine if an IOException occurs when opening the data file.

o Add a catch block to handle IOException exceptions. If an exception occurs:

Display the system message stored in the exception object.

Then display: Program exiting.

And exit the program using the code: System.exit(1);

Tests 10 12: Create an output file, logging the interest paid on each loan

Within the CalcInterestProfits class,

Above the file reading loop (at the top of the main method):

o Declare a second File variable to be used with an output file.

o Declare a PrintWriter variable.

o Within a try block:

Using the File variable, instantiate a File object associated with LOG_FILENAME.

Using the PrintWriter variable, instantiate a PrintWriter object to be used for writing to an output file.

o Add a catch block to catch any IOException errors. If an IOException occurs:

Display the following message: Processing loan data without creating a log file

Within the file reading loop, at the end:

o Add code check if the output file was opened, and if it was:

to write the loan number and interest paid on the loan out to the log file, as follows:

xx.xx interest will be collected on loan number 112233

After the file reading loop and all other output displays:

o If the file was opened, close the file.

o Display the message: Loan interest details are located in file log.txt

Tests 13 & 14: Blind tests

Sample Run (when fully implemented)

Enter input data filename:

loanData1.txt

Loan 112233 is for $200000.00 at 6.50% APR, to be paid over 360 month(s)

Loan 445566 is for $155555.00 at 5.25% APR, to be paid over 240 month(s)

Done reading file loanData1.txt -- 2 lines of data read

Total interest to be collected on all loans: $ 351101.57

Loan interest details are located in file log.txt

Sample Log File

255088.98 interest will be collected on loan number 112233

96012.59 interest will be collected on loan number 445566

That's all. Please let me know if there is anything I need to clarify. Again, thank you!