How can make it work? how to correct the coding?

Question

// my first lesson
import javax.swing.JOptionPane;
public class Product {
public static void main( String args[] )
int x, y, result;
String xCode, yQty;
     int FreeHand, Flash, Director;
     FreeHand = 10;
     Flash = 20;
     Director = 30;
xCode = JOptionPane.showInputDialog(
"Enter the product name we offer: FreeHand, Flash, Director" );
yQty = JOptionPane.showInputDialog(
"Pls enter the quantity:" );
x = Integer.parseInt( xCode );
y = Integer.parseInt( yQty );
price = x * y;
JOptionPane.showMessageDialog( null,
"Thanks, total purchase is" + price );
System.exit( 0 );

Answer 1

// my first lesson
import javax.swing.JOptionPane;
public class Product {
public static void main( String args[] )
int x, y, result;
String xCode, yQty;
       int FreeHand, Flash, Director;
       FreeHand = 10;
       Flash = 20;
       Director = 30;
xCode = JOptionPane.showInputDialog(
"Enter the product name we offer: FreeHand, Flash, Director" );
yQty = JOptionPane.showInputDialog(
"Pls enter the quantity:" );
x = Integer.parseInt( xCode );
y = Integer.parseInt( yQty );
price = x * y;
JOptionPane.showMessageDialog( null,
"Thanks, total purchase is" + price );
System.exit( 0 );
Well it doesn't work. You parse the input from the first JOptionPane as if it is an int, but it should be a String - "FreeHand", "Flash" etc.
Also in your original message the first String was declared over two lines - you can't do this! Either declare on one line or break up into substrings and use the "+" operator.
How about.
import javax.swing.JOptionPane;
import java.util.*;
public class Product {
    public static void main( String args[] )
       int x, y, result;
       String xCode, yQty;
       //New product Map
       Map products = new HashMap();
       products.put("FreeHand", new Integer(10));
       products.put("Flash", new Integer(20));
       products.put("Director", new Integer(30));
       xCode = JOptionPane.showInputDialog(
                 "Enter the product name we offer: "
                   + "FreeHand, Flash, Director" );
       yQty = JOptionPane.showInputDialog(
                 "Pls enter the quantity:" );
       x = ((Integer)map.get(xCode)).intValue();
       y = Integer.parseInt( yQty );
       price = x * y;
       JOptionPane.showMessageDialog(
          null,
          "Thanks, total purchase is" + price );
       System.exit( 0 );