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Thread: e.get source button error

  1. #1
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    Default 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


  2. #2
    Administrator copeg's Avatar
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    Default Re: e.get source button error

    Don't overlook the case sensitivity of method calls...and for future reference, please use the code tags for you source code.

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