Global Connection String

Question

Is there any way to use a global connection string variable for mysql database.
Currently there are some servlets in my web project.say ,
Servlet_1
Servlet_2
Servlet_3
Now i have to add these lines for each and every servlet to connect with mysql.
String driver =  "org.gjt.mm.mysql.Driver";
String url= "jdbc:mysql://localhost/my_db?user=root&password=dba";apart from that if there is a way to create a global connection string servlet or class i can reuse it with my application.
please let me know how to do this.

Answer 1

Ok this my Class for connection string.
package org.me.AuthAdmin;
public class ConString
    public ConString()
         String driver =  "org.gjt.mm.mysql.Driver";
          String url= "jdbc:mysql://localhost/my_db?user=root&password=dba"; 
}Please help me on this. i really don't know what to do here after.
package org.me.AuthAdmin;
import java.io.*;
import java.net.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.me.AuthAdmin.ConString;
public class AuthAdmin extends HttpServlet
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException
                String postUserName = request.getParameter("txt_un").trim();
          String postUserPwd = request.getParameter("txt_pwd").trim();
                String db_user_name=null;
                String db_user_pwd=null;
        try
            //String driver =  "org.gjt.mm.mysql.Driver";
           // String url= "jdbc:mysql://localhost/my_db?user=root&password=dba";
            Class.forName(driver).newInstance();
            Connection con=DriverManager.getConnection(url);
            Statement stmt=con.createStatement();
            String qStr="SELECT * FROM sysusers WHERE user_name = '"+postUserName+"' AND user_pwd = '"+postUserPwd+"'";
            ResultSet rst=stmt.executeQuery(qStr);
            while(rst.next())
                db_user_name = rst.getString("user_name");
                db_user_pwd = rst.getString("user_pwd");     
        catch(Exception e)
            throw new ServletException(e);
       if( (postUserName.equals(db_user_name)) && (postUserPwd.equals(db_user_pwd)))
            response.sendRedirect("panel.jsp");
       }else
            response.sendRedirect("error.jsp");
}