ComputeLoanUsingInputDialog
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package ComputeLoanUsingInputDialog;
import javax.swing.JOptionPane;
public class ComputeLoanUsingInputDialog {
public static void main(String[] args) {
//Enter yearly interest rate
String annualInterestRateString = JOptionPane.showInputDialog(null,
"Enter yearly interest rate, for example 8.25: ", "Input",
JOptionPane.QUESTION_MESSAGE);
//Convert String to double
double annualInterestRate = Double.parseDouble(annualInterestRateString);
double monthlyInterestRate = annualInterestRate / 1200;
String numberOfYearsString = JOptionPane.showInputDialog("Enter number of years as integer,"
+ "\n for example 5: ");
int numberOfYears = Integer.parseInt(numberOfYearsString);
String loanString = JOptionPane.showInputDialog("Enter loan amount,"
+ "for example 120000.95: ");
double loanAmount = Double.parseDouble(loanString);
double monthlyPayment = loanAmount * monthlyInterestRate / (1-1
/Math.pow(1 + monthlyInterestRate, numberOfYears * 12));
double totalPayment = monthlyPayment * numberOfYears * 12;
monthlyPayment = (int) (monthlyPayment * 100) / 100.0;
totalPayment = (int) (totalPayment * 100) / 100.0;
String output = "The monthly payment is " + monthlyPayment
+ "\nThe total payment is " + totalPayment;
JOptionPane.showMessageDialog(null, output);
}
}
import javax.swing.JOptionPane;
public class ComputeLoanUsingInputDialog {
public static void main(String[] args) {
//Enter yearly interest rate
String annualInterestRateString = JOptionPane.showInputDialog(null,
"Enter yearly interest rate, for example 8.25: ", "Input",
JOptionPane.QUESTION_MESSAGE);
//Convert String to double
double annualInterestRate = Double.parseDouble(annualInterestRateString);
double monthlyInterestRate = annualInterestRate / 1200;
String numberOfYearsString = JOptionPane.showInputDialog("Enter number of years as integer,"
+ "\n for example 5: ");
int numberOfYears = Integer.parseInt(numberOfYearsString);
String loanString = JOptionPane.showInputDialog("Enter loan amount,"
+ "for example 120000.95: ");
double loanAmount = Double.parseDouble(loanString);
double monthlyPayment = loanAmount * monthlyInterestRate / (1-1
/Math.pow(1 + monthlyInterestRate, numberOfYears * 12));
double totalPayment = monthlyPayment * numberOfYears * 12;
monthlyPayment = (int) (monthlyPayment * 100) / 100.0;
totalPayment = (int) (totalPayment * 100) / 100.0;
String output = "The monthly payment is " + monthlyPayment
+ "\nThe total payment is " + totalPayment;
JOptionPane.showMessageDialog(null, output);
}
}
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