E:\IT 215 Java Programming\GUI1.java:125: class, interface, or enum expected

Code:

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public class GUI1 extends JFrame implements ActionListener {

    private JTextArea output;
    private int current = 0;
    private Inventory inv;
    private JButton next;

    public GUI1() {
          super("Product GUI");
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // end the program when we are done

          // number of products...
          int number = Integer.parseInt(JOptionPane.showInputDialog("Please tell me the number of products to enter"));

          // Set up the inventory
          inv = new Inventory(number);

          // enter the product info using a series of dialogs
          for (int i = 0; i < number; i++) {
              int item = Integer.parseInt(JOptionPane.showInputDialog("Enter the item's number"));

              String name = JOptionPane.showInputDialog("Enter the item's name");

              int units = Integer.parseInt(JOptionPane.showInputDialog("Enter the units in stock"));

              double price = Double.parseDouble(JOptionPane.showInputDialog("Enter the price of each item"));

              String title = JOptionPane.showInputDialog("Enter the title");

              // make the object
              CD p = new CD(item, name, units, price, title);

              // put it in the inventory
              inv.add(i,p);
          }

          // Sort the inv
          inv.sort();

          // now popup the "real" gui for the display of the products...
          JPanel content = new JPanel();
          setContentPane(content);

          content.setLayout(new BoxLayout(content,BoxLayout.Y_AXIS));

          output = new JTextArea(20,50);
          output.setEditable(false);
          content.add(output);

          next = new JButton("Next");
          next.setActionCommand("Next");
          next.addActionListener(this);
          content.add(next);

          if (inv.size() > 0)
              display(inv.get(0));
          else {
              next.setText("End");
              next.setEnabled(false);
          }
          if (current == inv.size()-1) {
              next.setText("End");
              next.setEnabled(false);
          }

    }

    // button pushes...
    public void actionPerformed(ActionEvent evt) {
          if (evt.getActionCommand().equals("Next")) {
              if (current < inv.size()-1) {
                    current++;
                    CD p = inv.get(current);
                    display(p);
              }
              if (current == inv.size()-1) {
                    next.setText("End");
                    next.setEnabled(false);
              }
          }
    }

    // show a record
    public void display(CD p) {
          String str = "";
          str += "Item number: " + p.getItem() + "\n";
          str += "Item name: " + p.getName() + "\n";
          str += "Items in stock: " + p.getUnits() + "\n";
          str += "Price: $" + p.getPrice() + "\n";
          str += "Fee: $" + (p.value() - p.value()/1.05) + "\n";
          str += "Value (including the fee): $" + p.value() + "\n";

          // total value of it
          str += "Total fee: $" + (inv.totalValue() - inv.totalValue()/1.05) + "\n";
          str += "Total value (including the fee): $" + inv.totalValue() + "\n";
          output.setText(str);
    }

    public static void main(String args[]) {
          // setup and display the gui
          GUI1 g = new GUI1();
          g.pack();
          g.setVisible(true);
    }
}
public class CD extends Product {
     
    // title of the DVD
    private String title;
     
    // constructor
    public CD(int item, String name, int units, double price, String title) {
          super(item,name,units, price);
          this.title = title;
    }
     
    public String getTitle() {
          return title;
    }
     
    // total value with the 5% fee
    public double value() {
          return super.value()*1.05;
    }
}import java.util.*;

public class Inventory {
    // Stores multiple products...
     
    private CD[] prods; // field
     
    // Constructor, based on the size of the array we want
    public Inventory(int size) {
          prods = new CD[size];
    }
     
    // Add a product
    public void add(int loc, CD p) {
          prods[loc] = p;
    }
     
    // getter for a product
    public CD get(int loc) {
          return prods[loc];
    }
     
    // sort the array!
    public void sort() {
          Arrays.sort(prods);
    }
     
    public int size() {
          return prods.length;
    }
     
    // Total the value of all the products
    public double totalValue() {
          double val = 0.0;
          for (int i = 0; i < prods.length; i++) {
              val += prods.value();
          }
          return val;
    }
}
// Stores a Product
public class Product implements Comparable {

    // fields
    private int item;
    private String name;
    private int units;
    private double price;
     
    // constructor
    public Product(int item, String name, int units, double price) {
          this.item = item;
          this.name = name;
          this.units = units;
          this.price = price;
    }
     
    // total value
    public double value() {
          return units*price;
    }
     
    // getters and setters

    public int getItem() {
          return item;
    }

    public void setItem(int item) {
          this.item = item;
    }

    public String getName() {
          return name;
    }

    public void setName(String name) {
          this.name = name;
    }

    public int getUnits() {
          return units;
    }

    public void setUnits(int units) {
          this.units = units;
    }

    public double getPrice() {
          return price;
    }

    public void setPrice(double price) {
          this.price = price;
    }
     
    // for the sorting
    public int compareTo(Object p) {
          final Product o = (Product)p; // make it a product
          return (this.getName().compareToIgnoreCase(o.getName())); // compare the names
    }
     
}

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I have tried moving import to the beginning of the line but nothing happened. It just says illegal start up.

Again, are you different Java classes in different files or are they all in the same file? (as was already mentioned to you several times in this thread: http://www.java-forums.org/advanced-...-expected.html)

Best of luck.