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tejasri

program
0 Answer(s) 2 years and 7 months ago
Posted in : Servlet Interview Questions

Hi.. Good Morning Please say me whts wrong in this application

import javax.servlet.*; import javax.servlet.http.*; import java.sql.*; import java.io.*;

public class DBServlet extends HttpServlet { public void doGet(HttpServletRequest req,HttpServletResponse res) { try { // Getting query String qry; qry = req.getParameter("query"); System.out.println(qry);

        // DB accessing
        /*Class.forName("oracle.jdbc.driver.OracleDriver");
        System.out.println("driver");
        Connection con;
        con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:satya","scott","tiger");
        System.out.println(con);
        Statement st;
        st = con.createStatement();
        ResultSet rs;
        rs = st.executeQuery(qry);*/


        Class.forName("com.mysql.jdbc.Driver").newInstance();
        Connection con = DriverManager.getConnection ("jdbc:mysql://localhost:3306/test","root","");
        Statement st= con.createStatement();
        ResultSet rs = st.executeQuery(qry);

        // Sending table
        PrintWriter pw;
        pw = res.getWriter();

        /*pw.println("<html>");
        pw.println("<body>");
        pw.println("<table border=0 width=100%>");
        pw.println("<tr>");
        pw.println("<th> firstname </th>");
        pw.println("<th> lastname </th>");
        pw.println("<th> age </th>");
        pw.println("</tr>");

        while(rs.next())    {
            pw.println("<tr>"); 
            pw.println("<td>" + rs.getString(1) + "</td>");
            pw.println("<td>" + rs.getString(2) + "</td>");
            pw.println("<td>" + rs.getInt(3) + "</td>");
            pw.println("</tr>");    
        } //while*/
        rs.close();
        st.close();
        con.close();
        pw.println("</table> </body> </html>"); 
    } //try
    catch(Exception e) {
        e.printStackTrace();
    }
} // doGet()

} // class

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