Jsp login forum help

Question

Hi everyone, i have the bean class User.java below and i want to create the basic authentication login , when the user login successful the welcome page will be display depend on the type of user. For example, if the user type is teacher so he/she can create the new student username and password. Could anyone help me to do that. Please explain more detail since i am a newbie for jsp.
Thank you.
public class User {
public User() { }
public String getUserName() { return name;}
public String getPassword() {return password;}
public String userType () {return type;}
public void setUserName(String name ) { this.name = name;}
public void setPassword (String password) {this.password = password;}
public void setType (String type) {this.type = type;}
private String name;
private String password;
private String type;
}

Answer 1

The thing is i haven't using database before and i didn't have any database in the server, assume that i using hashtable to store the users detail. Could you please give me the example code.
Here is my login.jsp
<p>
<form name="loginForm" method="post" action="process.jsp">
<p align="center"><strong><font size="4">LOGIN</font></strong> </p>
<table width="24%" border="0" align="center" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF">
<tr>
<td bgcolor="#FFFFCC"><div align="right">User name</div></td>
<td bgcolor="#FFFFCC"><div align="center">
<input name="username" type="text" id="username">
</div></td>
</tr>
<tr>
<td bgcolor="#FFFFCC">
<div align="right">Password</div></td>
<td bgcolor="#FFFFCC"> <div align="center">
<input name="password" type="password" id="password">
</div></td>
</tr>
<tr>
<td bgcolor="#FFFFCC">
<div align="right">
<input name="usertype" type="checkbox" id="usertype" value="checkbox">
Staff </div></td>
<td bgcolor="#FFFFCC">
<div align="center">
<input type="submit" name="login" value="Login">
<input type="reset" name="clear" value="Clear">
</div></td>
</tr>
</table>
<p align="center">Staff's ID: teacher<br>
Staff's password: pass<br>
You must check the staff checkbox to login as clerk.</p>
</form>
</p>
So what i need is when the user input staff id, password and the check box, the page will check the correct authentication and the process to the new page, for example the teacher page that have another form to create the student authentication. When the student user created the student can login using the same form as the teacher's login form but this time will forward to the student's page. Also how can i use session to keep track of the user logged in, for example when the student logged successful, he/she can view her mark or do some task and can logout (which is clear the session).
Thank you so much.