newbie in programming i need help

i need help guys about this program sales using import

Code Java:

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import java.awt.*;
import javax.wing.*;
import java.awt.event.*;

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that have JFrame, label, combo box, button..here is an example but i need a new one..

Code Java:

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import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Sales extends JFrame implements ActionListener,ItemListener{
	double totalPrice = 0.00;
	int i=0;
	JLabel lblProduct = new JLabel("Product Name :");
	JLabel lblCart = new JLabel("Cart            :");
	JLabel lblPrice = new JLabel("Price :");
	String productList[] = {"Cake","Ice Cream", "Chocolate", "Sprite","Coke"};
	double priceList[] = {100,200,300,400,500};
	JButton btnAdd = new JButton("Add");
	JButton btnCancel = new JButton("Cancel");
	JButton btnRemove = new JButton("Remove");
	JComboBox cmbProduct= new JComboBox(productList);
	JComboBox cmbCart = new JComboBox();
	JTextField txtPrice = new JTextField(20);
	public Sales(){
		cmbProduct.addItemListener(this);
		btnCancel.addActionListener(this);
		btnAdd.addActionListener(this);
		btnRemove.addActionListener(this);
 
		JPanel panel1 = new JPanel(new GridLayout(3,3));
		panel1.add(lblProduct);
		panel1.add(cmbProduct);
		panel1.add(lblPrice);
		panel1.add(txtPrice);
		panel1.add(btnAdd);
		panel1.add(btnCancel);
 
		JPanel panel2 = new JPanel(new GridLayout(1,2));
		panel2.add(lblCart);
		panel2.add(cmbCart);
 
		JPanel panel3 = new JPanel(new BorderLayout());
		panel3.add(panel2,BorderLayout.PAGE_START);
		panel3.add(btnRemove,BorderLayout.PAGE_END);
 
 
 
		JPanel mainPanel = new JPanel(new BorderLayout());
		mainPanel.add(panel1, BorderLayout.PAGE_START);
		mainPanel.add(panel3,BorderLayout.PAGE_END);
 
		setContentPane(mainPanel);
		setSize(300,160);
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
	public void itemStateChanged(ItemEvent e){
		Object o = e.getSource();
		if(o==cmbProduct){
			i = cmbProduct.getSelectedIndex();
			if(i==0){
				txtPrice.setText(Double.toString(priceList[i]));
			}else if(i==1){
				txtPrice.setText(Double.toString(priceList[i]));
			}else if(i==2){
				txtPrice.setText(Double.toString(priceList[i]));
			}else if(i==3){
				txtPrice.setText(Double.toString(priceList[i]));
			}else if(i==4){
				txtPrice.setText(Double.toString(priceList[i]));
			}else{
				txtPrice.setText("");
			}
		}	
	}
	public void actionPerformed(ActionEvent e){
		Object o = e.getSource();
		if(o==btnAdd){
			cmbCart.addItem(cmbProduct.getSelectedItem());
//			totalPrice += Double.parseDouble(txtPrice.getText());
		}else if(o==btnRemove){
			cmbCart.removeItem(cmbCart.getSelectedItem());
		}
		else if(o==btnCancel){
			txtPrice.setText(null);
			cmbProduct.setSelectedItem(null);
		}
//		JOptionPane.showMessageDialog(null,Double.toString(totalPrice));
	}
	public static void main(String[] args){
		Sales s = new Sales();
	}
}

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A) Please wrap your code in the code tags ([highlight=java]Your code here[/highlight]). B) Perhaps someone will come along that understands what you are asking, but I have no idea what your question is...please rephrase your question, and be precise and concise - it helps you to help us answer your question with information and a defined question.

thanks for replying my thread sir sir i need a new code..like in the cashier sir, product and their price and their vat..that have jframe, jlabel, jcombobox, jbutton... like this sir Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting