How to made a login to be saved on database

Question

I'm new in JSP. And I really need a help with this one.
Suppose i made a login ( include password and name ) in JSP
1. how to made a database that save the name and password with JSP?
2. how can I save the login ( Pass and name ) in the database so I can made someone that not
register can't open my JSP page and only that register already can open my page?
Thanks for reading my question and help me solved my problem.

Answer 1

creates a database with columns username and password,
write a method in a JavaBean that gets queries the database for username and password,
In your jsp page call the bean to check it with the values in database. Here is a little code.
In jsp page
<%
     String username = request.getParameter("userid");
     String password = request.getParameter("password");
     boolean validLogin = conn.checkStudent(username, password);
     if(validLogin) {
%>
method In JavaBean
public boolean checkStudent(String un,String pw) throws Exception
     Statement stmt = con.createStatement() ;
     String query = ("SELECT firstName, password FROM student;");
     ResultSet rs = stmt.executeQuery(query);
     student=false;
     while(rs.next() && !student)
          String studentusername = rs.getString("firstName");
          String studentpassword = rs.getString("password");
          if(studentusername.equalsIgnoreCase(un) && studentpassword.equals(pw))     
               student=true;
               rs.close();
     return student;
hope this helps