Loan.java

package mytest;

public class Loan {
  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
  */
  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;
    double monthlyPayment = loanAmount * monthlyInterestRate / (1 -
    (1 / Math.pow(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;
  }
}