1. The user can get the flight from the flight from the flight from the ticket ID.
2. Login.html code is as follows:
Welcome to The Online Reservation System </ Title></p>
<p></ HEAD></p>
<p><Body></p>
<p><Center></p>
<p><Table></p>
<p><Form method = post action = "http://127.0.0.1:8000/servletcontext/flightalias"></p>
<p><Tr></p>
<p><TD> Your Ticket Number ID here </ td> <td> <input type = text name = number> </ td></p>
<p></ TR></p>
<p><Tr></p>
<p><TD> Your Password Here </ TD> <TD> <Input Type = Text Name = Password> </ TD></p>
<p></ TR></p>
<p></ Table></p>
<p><Center> <input type = Submit></p>
<p></ Form></p>
<p></ Center></p>
<p></ Body></p>
<p></ Html></p>
<p>Note: ServletContext is Web Context, Flightalias is Component AliaSes</p>
<p>3. The servlet code is as follows: (Flight.java)</p>
<p>Import javax.servlet. *;</p>
<p>Import javax.servlet.http. *;</p>
<p>Import java.io. *;</p>
<p>Import java.util. *;</p>
<p>Import java.sql. *;</p>
<p>Public Class Flight Extends Httpservlet</p>
<p>{</p>
<p>Connection DBCON;</p>
<p>PREPAREDSTATEMENT S;</p>
<p>ResultSet Result;</p>
<p>Public Void Service (httpservletRequest Req, httpservletResponse res) throws oException</p>
<p>{</p>
<p>//Connect to the database</p>
<p>Try</p>
<p>{</p>
<p>Class.Forname ("Sun.jdbc.odbc.jdbcodbcdriver");</p>
<p>DBCON = DriverManager.getConnection ("JDBC: ODBC: MyDataSource", "SA", "");</p>
<p>}</p>
<p>Catch (ClassNotFoundException E)</p>
<p>{</p>
<p>System.out.println ("Database Driver Not Found");</p>
<p>System.out.println (E.TOString ());</p>
<p>}</p>
<p>Catch (Exception E)</p>
<p>{</p>
<p>System.out.println ("unknown !?");</p>
<p>} // end catch</p>
<p>// boolean cookiefound = false;</p>
<p>Boolean valuefound = false;</p>
<p>// cookie thiscookie = NULL;</p>
<p>String Numid = Req.getParameter ("NUMID");</p>
<p>String password = Req.getParameter ("password"); string fromcity, Tocity;</p>
<p>"fromcity = new string ();</p>
<p>Tocity = new string ();</p>
<p>Res.SetContentType ("text / html");</p>
<p>PrintWriter out = res. maxwriter ();</p>
<p>/ * Cookie [] cookies = req.getCookies ();</p>
<p>Try</p>
<p>{</p>
<p>For (int i = 0; i <cookies.length; i )</p>
<p>{</p>
<p>System.out.Println ("Inside for");</p>
<p>thiscookie = cookies [i];</p>
<p>IF (thiscookie.getname (). Equals ("pnrnum"))</p>
<p>{</p>
<p>System.out.println ("Cookie Found");</p>
<p>CookiefOnd = true;</p>
<p>Break;</p>
<p>}</p>
<p>}</p>
<p>}</p>
<p>Catch (NullpointersException E)</p>
<p>{</p>
<p>Cookiefound = false;</p>
<p>} * /</p>
<p>Try</p>
<p>{</p>
<p>s = dbcon.preparestatement ("SELECT * FROM FLIGHT WHERE NUMID =?");</p>
<p>S.setString (1, NumID);</p>
<p>Result = S.ExecuteQuery ();</p>
<p>IF (result.next ())</p>
<p>{</p>
<p>Valuefound = true;</p>
<p>//System.out.println (Result.getstring(0));</p>
<p>}</p>
<p>Else</p>
<p>{</p>
<p>Valuefound = false;</p>
<p>} // END ELSE</p>
<p>} // end try</p>
<p>Catch (Exception E)</p>
<p>{</p>
<p>System.out.println (E.TOString ());</p>
<p>}</p>
<p>IF (valuefound == true)</p>
<p>{</p>
<p>Out.println ("<html>");</p>
<p>Out.println ("<Body>");</p>
<p>Out.println ("The Booking Details Are As Follows / N");</p>
<p>Out.println ("<Table>");</p>
<p>Try</p>
<p>{</p>
<p>Try</p>
<p>{</p>
<p>FromCity = Result.getstring (2);</p>
<p>Tocity = Result.getstring (3);</p>
<p>}</p>
<p>Catch (Exception E)</p>
<p>{</p>
<p>System.out.println ("Error");</p>
<p>System.out.println (E.TOString ());</p>
<p>}</p>
<p>Out.println ("<TR>");</p>
<p>Out.println ("<TD>");</p>
<p>Out.println ("from city:");</p>
<p>Out.println ("</ TD>");</p>
<p>Out.println ("<TD>");</p>
<p>Out.println (fromCITY);</p>
<p>Out.println ("</ TD>");</p>
<p>Out.println ("</ TR>");</p>
<p>Out.println ("<TR>");</p>
<p>Out.println ("<TD>");</p>
<p>Out.println ("To City:");</p>
<p>Out.println ("</ td>"); out.println ("<TD>");</p>
<p>Out.println (Tocity);</p>
<p>Out.println ("</ TD>");</p>
<p>Out.println ("</ TR>");</p>
<p>}</p>
<p>Catch (Exception EV)</p>
<p>{</p>
<p>System.out.println ("Error");</p>
<p>}</p>
<p>} // end if</p>
<p>IF (valuefound == false)</p>
<p>{</p>
<p>Out.println ("The Number ID That You Have Specified Does Not Exist.");</p>
<p>Out.println ("please check if you have entered the correct number ID.");</p>
<p>} // end if</p>
<p>Try</p>
<p>{</p>
<p>dbcon.close ();</p>
<p>}</p>
<p>Catch (Exception E)</p>
<p>{</p>
<p>System.out.Println ("Error Closing Database");</p>
<p>}</p>
<p>} // End Service</p>
<p>}</p>
<p>4. Launch the J2EE server After the client browser is entered http://127.0.0.1:8000/servletContext/login.html</p></div><div class="text-center mt-3 text-grey">
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