java databases connectivity

hi friend first of all you should create database in mysql/MS-access/sql or oracle
and after that you should
write coding in .java file that i add in jar file you can see this one

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;


public class DB {

    /**
     * @param args
     */
    public static void main(String[] args) {
       
        try {
            String name="sonal";
            String pass="asd";
            Class.forName("com.mysql.jdbc.Driver");
            Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/login","root","admin");
            Statement stmt=con.createStatement();
            ResultSet rs=stmt.executeQuery("select password from login where userName ='"+name+"' ");
            if(rs.next())
            {
                String temp_pass=rs.getString(1);
            if(temp_pass.endsWith(pass))
            {
                System.out.println("Welcome  "+name+"   password is - "+pass);
            }
            else
            {
                System.out.println("Wrong Password");
            }
            }
            else {
                System.out.println("Invalid User");
            }
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
       

    }

}

this coding is use only for login database in mysql