Java Reference
In-Depth Information
13
number of years, and loan amount
14 */
15 public Loan( double annualInterestRate, int numberOfYears,
16 double loanAmount) {
17 this .annualInterestRate = annualInterestRate;
18 this .numberOfYears = numberOfYears;
19 this .loanAmount = loanAmount;
20 loanDate = new java.util.Date();
21 }
22
23
constructor
/** Return annualInterestRate */
24
public double getAnnualInterestRate() {
25
return annualInterestRate;
26 }
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 new loanAmount */
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 ( 1 / Math.pow( 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 }
 
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