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Loan.java
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59 lines (46 loc) · 1.31 KB
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// date:17.3.29
// author: linyang <linyang@xiaomi.com>
public class Loan {
private double annualInterestRate;
private int numberOfYears;
private double loanAmount;
private java.util.Date loanDate;
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();
}
public double getAnnualInterestRate() {
return annualInterestRate;
}
public void setAnnualInterestRate(double annualInterestRate) {
this.annualInterestRate = annualInterestRate;
}
public int getNumberOfYears() {
return numberOfYears;
}
public void setNumberOfYears(int numberOfYears) {
this.numberOfYears = numberOfYears;
}
public double getLoanAmount() {
return loanAmount;
}
public void setLoanAmount(double loanAmount) {
this.loanAmount = loanAmount;
}
public double getMonthlyPayment() {
double monthlyInterestRate = annualInterestRate / 1200;
return loanAmount * monthlyInterestRate / (1 -
(Math.pow(1 / (1 + monthlyInterestRate), numberOfYears * 12)));
}
public double getTotalPayment() {
return getMonthlyPayment() * numberOfYears * 12;
}
public java.util.Date getLoanDate() {
return loanDate;
}
}