adding listeners to java applets

[Magoo04]

Im having trouble compiling this code I wrote it says that i can't add a listener to it. But as far as i know I have add all the proper imports. So could some one look at it and tell me where I'm going wrong.

Here is my code

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.*;

public class applet3 extends JApplet
{
	private Container mycontentpane=getContentPane();
	private JPanel mypanel=new JPanel();
	private JTextField firstname, lastname, email;
	private JButton submit;

	private JComboBox protection;
	private String protectionlist []={" Select one","antvirse","anti-malware","virse+malware"};

	private JTextArea results= new JTextArea();
	private String howlong;

	private JRadioButton y1,y2,y5,lt;
	private ButtonGroup time; // how long they want the protection for varible

	private double totalprice=0.0,price=0.0;
	private int numyear=0;

	public void init()
	{
		mypanel.setLayout(new GridLayout(11,2));
		mypanel.setBackground(Color.GRAY);

		// header message
		JLabel heading=new JLabel("Order Form");
		heading.setFont(new Font("SansSerif",Font.PLAIN,17));
		mypanel.add(heading);

		//empty cell
		JLabel emptycell=new JLabel("");
		mypanel.add(emptycell);

		//text fields
		JLabel fnamelbl= new JLabel("First Name:");
		firstname=new JTextField(30);
		mypanel.add(fnamelbl);
		mypanel.add(firstname);

		JLabel lnamelbl= new JLabel("Last Name:");
		lastname=new JTextField(30);
		mypanel.add(lnamelbl);
		mypanel.add(lastname);

		JLabel emaillbl= new JLabel("E-mail address:");
		email=new JTextField(60);
		mypanel.add(emaillbl);
		mypanel.add(email);

		//drop down list
		JLabel protectionlbl=new JLabel("What type of protection do you want?");
		mypanel.add(protectionlbl);
		protection= new JComboBox(protectionlist);
		mypanel.add(protection);

		// radiobutton list
		JLabel timelbl=new JLabel("How long do you want protection");
		mypanel.add(timelbl);

		y1=new JRadioButton("1 year",true);
		y2=new JRadioButton("2 year");
		y5=new JRadioButton("5 year");
		lt=new JRadioButton("lifetime");

		time.add(y1);
		time.add(y2);
		time.add(y5);
		time.add(lt);

		// listerner for radio buttons
		y1.addItemListener(this);
		y2.addItemListener(this);
		y5.addItemListener(this);
		lt.addItemListener(this);

		mypanel.add(y1);
		JLabel emptycell1=new JLabel("");
		mypanel.add(emptycell1);

		mypanel.add(y2);
		JLabel emptycell2=new JLabel("");
		mypanel.add(emptycell2);

		mypanel.add(y5);
		JLabel emptycell3=new JLabel("");
		mypanel.add(emptycell3);

		mypanel.add(lt);

		//results
		results.setEditable(false);
		mypanel.add(results);

		JLabel emptycell4=new JLabel("");
		mypanel.add(emptycell4);

		JLabel emptycell5=new JLabel("");
		mypanel.add(emptycell5);

		//submit button
		submit=new JButton("submit");
		submit.setMnemonic(KeyEvent.VK_S);
		mypanel.add(submit);

		// action listerner for the button
		submit.addActionListener(this);

		mycontentpane.add(mypanel);

	}
	public void itemStateChanged (ItemEvent e)
	{
		if (y1.isSelected())
		{numyear=1;
		howlong="1 year";}
		else if (y2.isSelected())
		{numyear=2;
		howlong="2 years";}
		else if (y5.isSelected())
		{numyear=4;
		howlong="5 years";}
		else if (lt.isSelected())
		{numyear=10;
		howlong="life time";}
	}
	public void actionPerformed(ActionEvent e)
	{//find price
		if (protection.getSelectedItem().equals("antvirse"))
		price=29.99;
		else if (protection.getSelectedItem().equals("anti-malware"))
		price=24.99;
		else if (protection.getSelectedItem().equals("virse+malware"))
		price=44.99;

		//calcutlaing total price
		totalprice=price*numyear;

		//displaying results
		results.setText(
			firstname.getText()+" "+lastname.getText()+", \n"+
			"You order the "+ protection.getSelectedItem()+" protection \n"+
			"for "+ howlong+" your total comes to $"+totalprice+"\n"+
			"A summary email will be sent to "+ email.getText()+" shortly.");
	}
}