import java.sql.*;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;




public class JDBCTest
{
	 public static void main(String[] args) 
	 {
	

		 try
		 {
		 	Class.forName("com.mysql.jdbc.Driver").newInstance();
		
		 }
		 catch (Exception ex)
		 {
		 }

		 try
		 {
		 	    Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/db1");

				Statement stmt =  conn.createStatement();
				ResultSet rs = stmt.executeQuery("SELECT * FROM tb1");

				System.out.println(rs);


		 }
		 catch (SQLException ex)
		 {
		 }
		 


		 
	 }
}

<?xml version="1.0" encoding="ISO-8859-1" ?> 
- <!--   Copyright 2004 The Apache Software Foundation

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

  --> 
- <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
  <display-name>Welcome to Tomcat</display-name> 
  <description>Welcome to Tomcat</description> 
- <!--  JSPC servlet mappings start 
  --> 
- <servlet>
  <servlet-name>org.apache.jsp.index_jsp</servlet-name> 
  <servlet-class>org.apache.jsp.index_jsp</servlet-class> 
  <servlet-name>test</servlet-name> 
  <servlet-class>JDBCTest</servlet-class> 
  </servlet>
- <servlet-mapping>
  <servlet-name>org.apache.jsp.index_jsp</servlet-name> 
  <url-pattern>/index.jsp</url-pattern> 
  <servlet-name>test</servlet-name> 
  <url-pattern>/test.htm</url-pattern> 
  </servlet-mapping>
- <!--  JSPC servlet mappings end 
  --> 
  </web-app>

HTTP Status 404 - /test.htm

--------------------------------------------------------------------------------

type Status report

message /test.htm

description The requested resource (/test.htm) is not available.


--------------------------------------------------------------------------------

Apache Tomcat/5.5.17

import java.io.*;
import javax.servlet.http.*;
import javax.servlet.*;
 
public class TestServlet extends HttpServlet
{
    public void doGet (HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException
    {
        PrintWriter out = response.getWriter();
        out.println("Hello world");
    }
}