The Loan class, does not implement Serializable. Rewrite the Loan class to imple

Question

The Loan class, does not implement Serializable. Rewrite the Loan class to implement Serializable. Write a program that creates five Loan objects and stores them in a file named Exercise19_6.dat. 1 public { 2 private double annualInterestRate; 3 private int numberOfYears; 4 private double loanAmount; 5 private java.util.Date loanDate; 6 7 /** Default constructor */ 8 public Loan() { 9 this(2.5, 1, 1000); 10 } 11 12 /** Construct a loan with specified annual interest rate, 13 number of years, and loan amount 14 */ 15 16 { 17 this.annualInterestRate = annualInterestRate; 18 this.numberOfYears = numberOfYears; 19 this.loanAmount = loanAmount; 20 loanDate = new java.util.Date(); 21 } 22 23 /** Return annualInterestRate */ 24 public double getAnnualInterestRate() { 25 return annualInterestRate; 26 } double loanAmount) public Loan(double annualInterestRate, int numberOfYears, class Loan no-arg constructor constructor 27 28 /** Set a new annualInterestRate */ 29 public void setAnnualInterestRate(double annualInterestRate) { 30 this.annualInterestRate = annualInterestRate; 31 } 32 33 /** Return numberOfYears */ 34 public int getNumberOfYears() { 35 return numberOfYears; 36 } 37 38 /** Set a new numberOfYears */ 39 public void setNumberOfYears(int numberOfYears) { 40 this.numberOfYears = numberOfYears; 41 } 42 43 /** Return loanAmount */ 44 public double getLoanAmount() { 45 return loanAmount; 46 } 47 48 /** Set a newloanAmount */ 49 public void setLoanAmount(double loanAmount) { 50 this.loanAmount = loanAmount; 51 } 52 53 /** Find monthly payment */ 54 public double getMonthlyPayment() { 55 double monthlyInterestRate = annualInterestRate / 1200; 56 double monthlyPayment = loanAmount * monthlyInterestRate / (1 - 57 (Math.pow(1 / (1 + monthlyInterestRate), numberOfYears * 12))); 58 return monthlyPayment; 59 } 60 61 /** Find total payment */ 62 public double getTotalPayment() { 63 double totalPayment = getMonthlyPayment() * numberOfYears * 12; 64 return totalPayment; 65 } 66 67 /** Return loan date */ 68 public java.util.Date getLoanDate() { 69 return loanDate; 70 } 71 }

Explanation / Answer

Loan.java

import java.io.Serializable;


public class Loan implements Serializable{
    private double annualInterestRate;
    private int numberOfYears;
    private double loanAmount;
    private java.util.Date loanDate;
   
    /** Default constructor */
    public Loan() {
        this(2.5, 1, 1000);
    }
   
    /** Construct a loan with specified annual interest rate,
    number of years, and loan amount 14 */
   
   
   
   
    /** Return annualInterestRate */
    public double getAnnualInterestRate() {
        return annualInterestRate;
    }
    public Loan(double annualInterestRate, int numberOfYears, double loanAmount){
        this.annualInterestRate = annualInterestRate;
        this.numberOfYears = numberOfYears;
        this.loanAmount = loanAmount;
        loanDate = new java.util.Date();
    }
   
                /** Set a new annualInterestRate */
               
       
        /** Return numberOfYears */
        public int getNumberOfYears() {
            return numberOfYears;
        }
       
        /** Set a new numberOfYears */
        public void setNumberOfYears(int numberOfYears) {
            this.numberOfYears = numberOfYears;
            }
       
        /** Return loanAmount */
        public double getLoanAmount() {
            return loanAmount;
            }
        /** Set a newloanAmount */
        public void setLoanAmount(double loanAmount) {
            this.loanAmount = loanAmount;
            }
        /** Find monthly payment */
        public double getMonthlyPayment() {
        double monthlyInterestRate = annualInterestRate / 1200;
            double monthlyPayment = loanAmount * monthlyInterestRate / (1 - (Math.pow(1 / (1 + monthlyInterestRate), numberOfYears * 12)));
            return monthlyPayment; }
        /** Find total payment */
        public double getTotalPayment() {
            double totalPayment = getMonthlyPayment() * numberOfYears * 12;
            return totalPayment; }
        /** Return loan date */
        public java.util.Date getLoanDate() {
            return loanDate;
        }
}

LoanTest.java

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;


public class LoanTest {

    /**
    * @param args
    * @throws IOException
    * @throws FileNotFoundException
    */
    public static void main(String[] args) throws FileNotFoundException, IOException {
        // TODO Auto-generated method stub
        String fileName = "C:\Exercise19_6.dat";
        Loan loanObject1 = new Loan(5, 22, 100000);
        Loan loanObject2 = new Loan(8, 2, 500000);
        Loan loanObject3 = new Loan(9, 12, 300000);
        Loan loanObject4 = new Loan(7, 15, 500000);
        Loan loanObject5 = new Loan(10, 8, 200000);
        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(fileName));
       
        oos.writeObject(loanObject1);
        oos.writeObject(loanObject2);
        oos.writeObject(loanObject3);
        oos.writeObject(loanObject4);
        oos.writeObject(loanObject5);
        oos.close();
        System.out.println("Successfully Written loan objects to : " + "C:\Exercise19_6.dat");
       
    }

}

Output:

Successfully Written loan objects to : C:Exercise19_6.dat

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.