LoginPanel is not abstract and does not override abstract method actionPerformed..

I am not sure what does the errors meant, I'll be thankful if anyone can explain..

/*Name:Soh Yun Lin
 *Admin Number:032655C
 *Module Group :D IT0307
 *Purpose:Login in screen to only allow authorized users to enter main program
 */
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
 
public class LoginPanel extends JPanel implements ActionListener
{
  JFrame parent;
  private JLabel lblUserID;
  private JLabel lblPwd;
  private JTextField tfdUserID;
  private JPasswordField pfdPwd;
  private JButton btnLogin;
  private JButton btnReset;
 
  public LoginPanel(JFrame parent)
  {
    this.parent = parent;
    setLayout(null);
  
    lblUserID = new JLabel("User ID");
    lblPwd = new JLabel("Password");
    tfdUserID = new JTextField(20);  //login textfield with 20 as maximum number 
                                     // of input
    pfdPwd = new JPasswordField(12);    //password field with 12 as maximum 
                                        // number of input
    pfdPwd.setEchoChar('*');    //make * appear when something is typed in the 
                                // tfdPwd textfield
    tfdUserID.setText("");      //make sure there is nothing in the textfield 
                                // when the program innitially loads
    pfdPwd.setText("");        //makes sure there is nothing in the textfield 
                               // when the program innitially loads
  
    JPanel pnlTop = new JPanel();
    pnlTop.setBorder(new TitledBorder("Please Login"));
    pnlTop.setLayout(null);
    pnlTop.add(lblUserID);
    pnlTop.add(tfdUserID);
    pnlTop.add(lblPwd);
    pnlTop.add(pfdPwd);
    pnlTop.setBounds(30, 30, 400, 100);
    add(pnlTop);
  
    btnLogin = new JButton("Login");
    btnReset = new JButton("Reset");
    btnLogin.setBounds(100, 200, 100, 30);
    btnReset.setBounds(250, 200, 100, 30);
    btnLogin.addActionListener(this);
    btnReset.addActionListener(this);
    add(btnLogin);
    add(btnReset);
    
    tfdUserID.requestFocus();      //to make sure this textfield becomes the main 
                                   // focus when first loaded for keying in input
  }
  
  public void ActionPerformed(ActionEvent e)
  {
    JButton btn = (JButton)e.getSource();
    if (btn == btnReset)
    {
      tfdUserID.setText("");
      pfdPwd.setText("");
      tfdUserID.requestFocus();  //to make sure this textfield becomes main focus 
                                 // after the reset button is pressed
    }
    else if (btn == btnLogin)
    {
      if (checkLogin() == true)
      {
        new MainTabbedPane();
        parent.setVisible(false);
      }
    }
    else
    {
      JOptionPane.showMessageDialog(null, "Login Error", "Error Message", 
          JOptionPane.INFORMATION_MESSAGE);
      pfdPwd.requestFocus();    //to make sure this textfield becomes main focus 
                                // if there is a login error
    }
  }
  
  public boolean checkLogin()
  {
    String pwd = new String(pfdPwd.getPassword());
    if ((tfdUserID.getText().equals("admin")) && (pwd.equals("admin")))
    {
      return true;
    }
    else
    {
      return false;
    }
  }
 
  public static void main(String[] args)
  {
    JFrame f = new JFrame("Welcome to Amazing Book Order System");
    LoginPanel loginPanel = new LoginPanel(f);
    f.getContentPane().add(loginPanel);
    f.setSize(500, 300);
    f.setResizable(false);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
  }
}

Error:
[ edited to remove horrible, evil, wicked tab character, to turn off smilies, and to break really long lines -ds ]
[ April 13, 2004: Message edited by: Dirk Schreckmann ]

public void ActionPerformed(ActionEvent e)

Java is case sensitive; the abstract method is called actionPerformed.

LoginPanel is not abstract and does not override abstract method actionPerformed..
I am not sure what does the errors meant, I'll be thankful if anyone can explain..
A class that is defined to implement an interface, must provide implementations for all of the methods declared in that interface; otherwise the class must defined to be abstract.
Your LoginPanel class is defined to implement the interface ActionListener. The ActionListener interface declares a method called actionPerformed. Your LoginPanel doesn't implement this method properly. (See Ernest's post above.) So, the compiler is complaining that the class cannot be defined to not be abstract.