Authentication

The developer has to create a JavaBean for authenticating an employee. The
developer creates an event class with name LoginEvent and an interface with name
LoginListener. The LoginListner interface contains a method ValidateLogin().
The developer writes the following code snippet to handle the event:

public class LoginBean
{
public LoginBean()
{
/*user interface for login */
}
public void addLoginListener(LoginListener login)
{
this.login = login;
}
public void fireLoginEvent(LoginEvent loginE)
{
login.validateLogin(loginE);
}
public void actionPerformed()
{
if (ae.getSource()==ok)
{
/*retrieving information from the user interface
and passing as parameter in fireLoginEvent method*/
fireLoginEvent(loginE);
}
}
}
However the preceding code snippet gives an error. Identify the reason for the error
and give the correct code for it.