package Chapter7;

public class Loan {
 private double annualInterestRate;
 private int numberOfYears;
 private double loanAmount;
 private java.util.Date loanDate;

 /** Default constructor */
 public Loan() {
 this(7.5, 30, 100000);
 }

 public Loan(double annualInterestRate, int numberOfYears,
 double loanAmount) {
 this.annualInterestRate = annualInterestRate;
 this.numberOfYears = numberOfYears;
 this.loanAmount = loanAmount;
 loanDate = new java.util.Date();
 }

 /** Return annualInterestRate */
 public double getAnnualInterestRate() {
 return annualInterestRate;
 }

 /** Set a new annualInterestRate */
 public void setAnnualInterestRate(double annualInterestRate) {
 this.annualInterestRate = 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;
 return loanAmount * monthlyInterestRate / (1 -
 (Math.pow(1 / (1 + monthlyInterestRate), numberOfYears * 12)));
 }

 /** Find total payment */
 public double getTotalPayment() {
 return getMonthlyPayment() * numberOfYears * 12;
 }

 /** Return loan date */
 public java.util.Date getLoanDate() {
 return loanDate;
 }
}