Thread: e.get source button error

hi i am currently new to java and am stuck on this error that i am getting for my program could you help me out please thanks

the code is

import static javax.swing.JOptionPane.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.*;
import java.text.DecimalFormat;
 
public class ticket extends JFrame implements ActionListener {
 
	static final double SINGLE = 1.40;
	static final double RETURN = 2.40;
	static final double ZONE_A = 3.80;
	static final double ZONE_A_B = 5.50;
 
	  DecimalFormat pounds = new DecimalFormat("£0.00");
	private String id;
	private  JTextField ticket = new JTextField(5);
	private  JTextField stp = new JTextField(5);
	int amount = 0; //pay in pence
	private  JTextField change = new JTextField(5);
	private  JTextField paid = new JTextField(5);
	private JButton ten = new JButton("10p");
	private JButton twenty = new JButton("20p");
	private JButton fifty = new JButton("50p");
	private JButton pound = new JButton("£1");
	private JButton two = new JButton("£2");
	private JButton five = new JButton("£5");
	private JButton tenp = new JButton("£10");
	private JButton twentyp = new JButton("£20");
	private JButton cancel = new JButton("Cancel");
	private JRadioButton single = new JRadioButton("single (£1.40)",false);
	private JRadioButton Return = new JRadioButton("return (£2.40)",false);
	private JRadioButton zoneA = new JRadioButton("Zone A (£3.80)",false);
	private JRadioButton zoneAB = new JRadioButton("Zone A B (£5.50)",false);
	ButtonGroup type =new ButtonGroup();
	// The spinner give double values in the range 1 to 10.
	 // From the spinner, the user can only purchase 10 tickets at a time!
	 private JSpinner numtick = new JSpinner(new SpinnerNumberModel(1, 0, 10, 1));
	 private int stpno = 0;
	 private int size = 0;
 // Set as private so that it can only be used in this class and no others. Set as public to be used in other classes.
 
	public static void main(String[] args)
	{
		new ticket();
	}
	public ticket()
	{
		  setLayout(new BorderLayout());
         setSize(700, 150);
         setTitle("Redwich Trams - Ticket Machine");
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         JPanel top = new JPanel();
         top.setLayout(new FlowLayout());
         top.add(new JLabel("Ticket Type:   "));
 
		 type.add(single);
		 type.add(Return);
		 type.add(zoneA);
		 type.add(zoneAB);
		 top.add(single);
		 top.add(Return);
		 top.add(zoneA);
		 top.add(zoneAB);
		 top.add(new JLabel("  Tickets"));
		 top.add(numtick);
		 single.addActionListener(this);
		 Return.addActionListener(this);
		 zoneA.addActionListener(this);
		 zoneAB.addActionListener(this);
 
		add("North", top);
		 setVisible(true);
 
		 JPanel middle = new JPanel();
         middle.setLayout(new FlowLayout());
		 middle.add(new JLabel("Ticket Type:   "));
		 setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
		 middle.add(ten);
		 middle.add(twenty);
		 middle.add(fifty);
		 middle.add(pound);
		 middle.add(two);
		 middle.add(five);
		 middle.add(tenp);
		 middle.add(twentyp);
		 middle.add(cancel);
		 ten.addActionListener(this);
		 twenty.addActionListener(this);
		 fifty.addActionListener(this);
		 pound.addActionListener(this);
		 two.addActionListener(this);
		 five.addActionListener(this);
		 tenp.addActionListener(this);
		 twentyp.addActionListener(this);
		 add("center", middle);
		 setVisible(true);
 
		  JPanel bottom = new JPanel();
         bottom.setLayout(new FlowLayout());
         bottom.add(new JLabel("   Ticket Cost:"));
		 bottom.add(ticket);
         bottom.add(new JLabel("   Amount Paid:"));
         bottom.add(paid);
         bottom.add(new JLabel("   Amount Still To Pay:"));
         bottom.add(stp); 
		 stp.setEditable(false);
		 bottom.add(new JLabel("   Change:"));
         bottom.add(change);
		 ticket.setEditable(false);
		 paid.setEditable(false);
 
		 change.setEditable(false);
         ticket.setText("£0.00");
		 stp.setText("£0.00");
		 change.setText("£0.00");
		 paid.setText("£0.00");
		 add("South", bottom);
		 setVisible(true);
	}
		  public void actionPerformed(ActionEvent e) 
	 {
		if (e.getSource() == ten) amount -= 10;
        if (e.getSource() == twenty) amount -= 20;
        if (e.getSource() == fifty) amount -= 50;
        if (e.getSource() == pound) amount -= 100;
        if (e.getSource() == two) amount -= 200;
		if (e.getSource() == five) amount -= 500;
		if (e.getsource() == tenp) amount -= 1000;
        if (e.getsource() == twentyp) amount -= 2000;
	 }
	{
double tp = 0;
	    int notick = Integer.parseInt(""+numtick.getValue());
      if (single.isSelected()) tp = 1.40; 
		{
 
		  ticket.setText(pounds.format(tp));
		  stp.setText(pounds.format(tp));
			  }
 
		if (Return.isSelected()) tp = 2.40;
			{
 
          ticket.setText(pounds.format(tp));
		  stp.setText(pounds.format(tp));
			}
 
	 if (zoneA.isSelected()) tp = 3.80;
			  {
			JOptionPane.showMessageDialog(this, "Zone A (Between Kingstone Town and Parkon City (£3.80) has been selected."); 
			ticket.setText(pounds.format(tp));
			stp.setText(pounds.format(tp));
		     }
 
		 if (zoneAB.isSelected()) tp = 5.50; 
			  {
			ticket.setText(pounds.format(tp));
			stp.setText(pounds.format(tp));
			  }
 
		 	 if (e.getSource() == cancel);
		 {  
	   ticket.setText("£0.00");
	   stp.setText("£0.00");
	   change.setText("£0.00");
	   paid.setText("£0.00"); 
		 }
 
		 if (e.getSource() == bExit) {
            System.exit(0);
        }
 
 }
}

the error that i am getting is the following

---------- javac ----------
ticket.java:129: cannot find symbol
symbol : method getsource()
location: class java.awt.event.ActionEvent
if (e.getsource() == tenp) amount -= 1000;
^
ticket.java:130: cannot find symbol
symbol : method getsource()
location: class java.awt.event.ActionEvent
if (e.getsource() == twentyp) amount -= 2000;
^
ticket.java:162: cannot find symbol
symbol : variable e
location: class ticket
if (e.getSource() == cancel);
^
3 errors

Output completed (0 sec consumed) - Normal Termination