I'm working on a program (with a graphical user interface) that will calculate and display the mortgage payment amount, the loan balance, loan payment number, and interest paid from each payment from these three loans below:

7 years at 5.35%
15 years at 5.5%
30 years at 5.75%

The problem that I'm having when I compile my code I'm getting these three errors:

orphaned case line 52
orphaned case line 79
orphaned default line 106

Here is my source code:

import java.text.DecimalFormat;
import javax.swing.JOptionPane;

public class MortgageCalculatorServiceRequest5///Name of my File and Class
{
public static void main(String[] args)
{
double monthlyPayment;//Declaring my Variables
int loanNumber;
String totalLoan;
int loanAmount;
double loanInterest;
int loanTerm;
DecimalFormat decimalPlaces=new DecimalFormat("0.00"); //Format decimal point for proper display

totalLoan=JOptionPane.showInputDialog(null, "Enter the number of What Loan You would like to see broken down by\n mortgage payment amount followed by the loan balance and interest paid for each payment:\n 1. 7 years at 5.35%:\n 2. 15 years at 5.5%:\n 3. 30 years at 5.75%\n ");

loanNumber = Integer.parseInt(totalLoan);
switch (loanNumber)
{
case 1:
loanAmount = 200000;
loanInterest = .0535;
loanTerm = 7;
monthlyPayment = (loanAmount*(loanInterest/12))/(1-(Math.pow(1/(1+(loanInterest/12)),(loanTerm*12))));//Math formula for Mortgage Monthly Payment
JOptionPane.showMessageDialog(null,"Your Monthly Payments Are" +decimalPlaces.format(monthlyPayment)+JOptionPane.PLAIN_MESSAGE);
//determine loan balance
double mintamount; //Variable - Holder for amount of Interest paid in a given month
double loanBalance; //Variable - New loan balance after monthly payment
double prinPayment; //Variable - Holder for principle payment each month
double monthintamount;
double mintAmount;
prinPayment = monthlyPayment-loanInterest;
loanBalance = loanAmount - prinPayment;
mintAmount = monthlyPayment-prinPayment;
monthintamount = loanInterest*loanAmount;
loanBalance = loanAmount - mintAmount;
int monthpay = 1;
int mPaynumber = 0;
//Begins Looping for each payment amount
while (loanBalance > 0) {
JOptionPane.showMessageDialog(null,"Payment Number" +decimalPlaces.format(mPaynumber)+JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null,"The new balance is: $" +decimalPlaces.format(loanBalance)+JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null,"The interest paid on the loan is: $" +decimalPlaces.format(monthintamount)+JOptionPane.PLAIN_MESSAGE);
loanBalance = loanBalance - prinPayment;
monthintamount = (loanBalance * (loanInterest/ 12)); //formula determines monthly interest paid
break;
case 2:
loanAmount = 200000;
loanInterest = .055;
loanTerm = 15;
monthlyPayment = (loanAmount*(loanInterest/12))/(1-(Math.pow(1/(1+(loanInterest/12)),(loanTerm*12))));//Math formula for Mortgage Monthly Payment JOptionPane.showMessageDialog(null,"Your Monthly Payments Are" +decimalPlaces.format(monthlyPayment)+JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null,"Your Monthly Payments Are" +decimalPlaces.format(monthlyPayment)+JOptionPane.PLAIN_MESSAGE);
//determine loan balance
double mintamount; //Variable - Holder for amount of Interest paid in a given month
double loanBalance; //Variable - New loan balance after monthly payment
double prinPayment; //Variable - Holder for principle payment each month
double monthintamount;
double mintAmount;
prinPayment = monthlyPayment-loanInterest;
loanBalance = loanAmount - prinPayment;
mintAmount = monthlyPayment-prinPayment;
monthintamount = loanInterest*loanAmount;
loanBalance = loanAmount - mintAmount;
int monthpay = 1;
int mPaynumber = 0;
//Begins Looping for each payment amount
while (loanBalance > 0) {
JOptionPane.showMessageDialog(null,"Payment Number" +decimalPlaces.format(mPaynumber)+JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null,"The new balance is: $" +decimalPlaces.format(loanBalance)+JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null,"The interest paid on the loan is: $" +decimalPlaces.format(monthintamount)+JOptionPane.PLAIN_MESSAGE);
loanBalance = loanBalance - prinPayment;
monthintamount = (loanBalance * (loanInterest/ 12)); //formula determines monthly interest paid
break;
case 3:
loanAmount = 200000;
loanInterest = .0575;
loanTerm = 30;
monthlyPayment = (loanAmount*(loanInterest/12))/(1-(Math.pow(1/(1+(loanInterest/12)),(loanTerm*12))));//Math formula for Mortgage Monthly Payment JOptionPane.showMessageDialog(null,"Your Monthly Payments Are" +decimalPlaces.format(monthlyPayment)+JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null,"Your Monthly Payments Are" +decimalPlaces.format(monthlyPayment)+JOptionPane.PLAIN_MESSAGE);
//determine loan balance
double mintamount; //Variable - Holder for amount of Interest paid in a given month
double loanBalance; //Variable - New loan balance after monthly payment
double prinPayment; //Variable - Holder for principle payment each month
double monthintamount;
double mintAmount;
prinPayment = monthlyPayment-loanInterest;
loanBalance = loanAmount - prinPayment;
mintAmount = monthlyPayment-prinPayment;
monthintamount = loanInterest*loanAmount;
loanBalance = loanAmount - mintAmount;
int monthpay = 1;
int mPaynumber = 0;
//Begins Looping for each payment amount
while (loanBalance > 0) {
JOptionPane.showMessageDialog(null,"Payment Number" +decimalPlaces.format(mPaynumber)+JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null,"The new balance is: $" +decimalPlaces.format(loanBalance)+JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null,"The interest paid on the loan is: $" +decimalPlaces.format(monthintamount)+JOptionPane.PLAIN_MESSAGE);
loanBalance = loanBalance - prinPayment;
monthintamount = (loanBalance * (loanInterest/ 12)); //formula determines monthly interest paid
break;
default:
JOptionPane.showMessageDialog(null,"Please enter 1, 2, or 3"+JOptionPane.PLAIN_MESSAGE);
}

System.exit(0);

}}}}}

I have bolded the source code that has errors. Any help on this would be much appreciated.