จะเริ่มศึกษา java+jsp อย่างไร จะเริ่มศึกษา java+jsp ครับ อยากเขียน web app ด้วย java ครับ

package mybeans;

import java.sql.*;
import java.io.*;

public class testBean 
{
  private String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
  private String url = "jdbc:odbc:testODBC";

  protected Connection conn;
  
  String sql = "Select * FROM T1";
  ResultSet rs = null;
  Statement st = null;
  public testBean() {super();}
  
  public void makeConnection() throws  Exception
  {
   System.out.println("Connection started");
   Class.forName(driver);
   conn = DriverManager.getConnection(url);
  }
  
  public boolean getNextRecord() throws Exception
  {
    return rs.next();
  }
  
  public String getField( String Column) throws Exception
  {
    return rs.getString(Column);
  }

  public boolean getRecords() throws Exception
  {
    String mySQL = sql;
    st = conn.createStatement();
    rs = st.executeQuery(mySQL);
    return (rs != null);
   }
     
  public void takeDown() throws Exception
   {
     st.close(); 
     conn.close();    
   }
}

<% 

  testbean.makeConnection();
   String [] id;
   String [] name;     

  if ( testbean.getRecords() ) 
  {
    while ( testbean.getNextRecord() )  
    {             
      id[] = testbean.getField("id");
      name[] = testbean.getField("name");
     }            
}
%>