Need help with OutPut message

Question

My Code's below. I'm having trouble with the out put. Can anyone offer any suggestions?
import javax.swing.JOptionPane;
import java.util.Locale;
import java.text.NumberFormat;
public class Retail
public static void main(String args[])
String firstNum;
String secondNum;
String result;
int prodNum;      //first number to input
double quantity; //second number to input
double total;          //total of Prod * Quantity Sold for all items
// To use American Dollar
NumberFormat moneyFormat = NumberFormat.getCurrencyInstance( Locale.US );
// first number entered as string
firstNum = JOptionPane.showInputDialog( "Enter product number 1-5" );
// second number entered as string
secondNum = JOptionPane.showInputDialog( " Enter quantity of items sold" );
// convert values to type double or int from type string
prodNum = Integer.parseInt( firstNum );
quantity = Double.parseDouble( secondNum);
result = "";
switch (prodNum)
case 1: // 1st product
total = 2.98 * quantity;
break;
case 2: // 2nd product
total = 4.50 * quantity;
break;
case 3: // 3rd product
total = 9.98 * quantity;
break;
case 4: //4th product
total = 4.49 * quantity;
break;
case 5:
total = 6.87 * quantity;
break;
default: JOptionPane.showMessageDialog( null, "Wrong product number entered" );
JOptionPane.showMessageDialog( null, result, "Total Price of Items Purchased", JOptionPane.INFORMATION_MESSAGE );

Answer 1

basically what it is is it's saying it cannot resolve
a symbol, but I can't figure out which symbol?Not with the code you just posted, it doesn't. However, the error will tell you exactly what the compiler doesn't recognize. In the meantime, try this:
import javax.swing.JOptionPane;
import java.util.Locale;
import java.text.NumberFormat;
public class Retail
    public static void main(String args[])
        String firstNum;
        String secondNum;
        String result;
        int prodNum; //first number to input
        double quantity; //second number to input
        double total = 0.0; //total of Prod * Quantity Sold for all items **INITIALIZED **
        // To use American Dollar
        NumberFormat moneyFormat = NumberFormat.getCurrencyInstance( Locale.US );
        // first number entered as string
        firstNum = JOptionPane.showInputDialog( "Enter product number 1-5" );
        // second number entered as string
        secondNum = JOptionPane.showInputDialog( " Enter quantity of items sold" );
        // convert values to type double or int from type string
        prodNum = Integer.parseInt( firstNum );
        quantity = Double.parseDouble( secondNum);
        switch (prodNum)
            case 1: // 1st product
            total = 2.98 * quantity;
            break;
            case 2: // 2nd product
            total = 4.50 * quantity;
            break;
            case 3: // 3rd product
            total = 9.98 * quantity;
            break;
            case 4: //4th product
            total = 4.49 * quantity;
            break;
            case 5:
            total = 6.87 * quantity;
            break;
            default: JOptionPane.showMessageDialog( null, "Wrong product number entered" );
        JOptionPane.showMessageDialog( null, moneyFormat.format(total), "Total Price of Items Purchased", JOptionPane.INFORMATION_MESSAGE );