Help in flow control diagram, class diagram and design documentation

Please review documentation in the attached file. Please ensure that it displays flow control diagram, class diagram and design documentation for the JAVA code below. If needed please revise. Thank you


driver.java
import java.util.*;
/***Created on June 27, 2004, 5:07 PM
* Java Programming Project Workshop 3 -
* Problem statement - Create a driver for the Mortgage Calculator
* Scope - declare, initialize and set values and display mortgage calculator
* @author  TERRY PARKER
*/
public class Driver {
    
   /**
     * @param args the command line arguments
     */
    public static void main(String args[]){//The main part of Mortgage Calculator begins here
        Mortgagecalculator mCalc;
        mCalc = new Mortgagecalculator();
        mCalc.setYears(30);
        mCalc.setLoanAmount(200000);
        mCalc.setInterestRate(.0575);
        mCalc.CalcMonthlyPayment();
        System.out.println(mCalc.toString());//Display the contents
        mCalc.schedule();
       }//end of group
}//closing bracket

mortgagecalculator.java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.NumberFormatException;

/** Created on June 27, 2004, 5:07 PM
* Java Programming Project Workshop 2 -
* Problem statement - Create a Mortgage Calculator WITHOUT a graphical user interface
* Purpose - provide a user-friendly service to potential users for accurately planning mortgage and other types of loans
* Scope - The mortgage calculator must display the mortgage payment amount given the amount of the mortgage, the term of the mortgage, and the interest rate of the mortgage.
* This program must have hard code amount = 200,000, term= 30 years, and the interest rate = 5.75% in class driver.java
* Algorithm - standard loan calculation with fixed number of payments:
* Divide the yearly interest rate of 5.75% by 12 to get monthly ineterst rate
* Multiply the number of years by 12 to get the number of months
* Formula for monthly payment: monthlyPayment = [P((1+r)^n)*r]/[(1+r^n)-1], where r and n are calculated as above.  
*
* Inputs:
* Principal = $200,000
* Interest Rate = 0.0575
* Periods = 360
*
* Output:
* Monthly Payment =
*
* @author  TERRY PARKER
* NETBEANS IDE 3.6*/

public class Mortgagecalculator{
    
    /** Creates a static mortgagecalculator */
    
    public int years;//define variables
    public double loanAmount;
    public double interestRate;
    public double monthlyPayment;
    
    public void setYears(int inYears)//setter
    {
        years=inYears;
    }//end set years
    
    public int getYears()//getter
    {
        return years;
    }//end get years
    
    public void setLoanAmount(double inLoanAmount)//setter
    {
        loanAmount=inLoanAmount;
    }//end set loanAmount
    
    public double getLoanAmount()//getter
    {
        return loanAmount;
    }//end get loanAmount
    
    public void setInterestRate(double inInterestRate)//setter
    {
        interestRate=inInterestRate;
    }//end set interestRate
    
    public double getInterestRate()//getter
    {
        return interestRate;
    }//end get interestrate
    
    public void CalcMonthlyPayment()
    {
        monthlyPayment=loanAmount*Math.pow(1 + interestRate/12, years*12) * (interestRate/12)/(Math.pow(1 + interestRate/12, years*12) -1);
    }//Divide the yearly interest rate of 5.75% by 12 to get monthly ineterst rate
     // Multiply the number of years by 12 to get the number of months
     // Formula for monthly payment: monthlyPayment = [P((1+r)^n)*r]/[(1+r^n)-1], where r and n are calculated as above.
        
    public String toString(){//strings are used to store text and variables
    return "Mortgage Information" + "n"+ "Loan Amount: $" + loanAmount + "n" + "Interest Rate: " + interestRate + "%" + "n" + "Term: "
    + (years*12) + " months" + "n" + "Monthly Payment: $" + (Math.round(monthlyPayment*100.00)/100.00);//Using the round to two decimal places
}      
    public void schedule(){//print schedule and scroll
        System.out.println();
        System.out.println("Month     " + "t" + "Amount     " + "tt" + "Interest    " + "t" + "Balance    ");
        int counter = 1;
        double Balance, Interest;
        while(counter <= years*12){
        int scrollCounter = 0;
        while(scrollCounter<30){
        Balance = loanAmount*(1+interestRate/12) - monthlyPayment; //Calculation of Balance
        Interest = loanAmount*interestRate/12; //Calculation of Interest
        //Now print using the round to two decimal places
        System.out.println(""+counter+"tt"+(Math.round(loanAmount*100.00)/100.00)+"tt"+(Math.round(Interest*100.00)/100.00)+"tt"+(Math.round(Balance*100.00)/100.00));
        loanAmount = Balance; //Set the Principal for next round to the Balance of previous month
        counter++;
        scrollCounter++;
        }
        System.out.println("Press Enter to contiune..");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in), 1);
        String str = "";
        try {
        str = br.readLine();
        }
        catch (IOException ioe) {
        System.out.println(ioe);}
        }
    }//end group
}//closing bracket

Attached file(s):

documentation.doc  View File