我想写一个java程序来建立java程序和数据库之间的连接，但我不想使用任何ide，如netbeans、eclipse、visual studio、xamp等。我有jar文件作为所需dbms的驱动程序。

public class JDBCDemo
{
  public static void main(String args[])
  {
    try
    {
          /**
       * Steps for Establishing Connection between Java Application and Database
       */

      //1. Load and Reginster Driver
      Class.forName("com.mysql.jdbc.Driver");

      //2. Establish a connection between Java Application and Database
      Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/practicals", "root", "root123");

      //3. Create Statement Object
      Statement st = con.createStatement();

      //4. Send and Execute SQL queries
      ResultSet rs = st.executeQuery("SELECT * FROM tushar");

      //5. Process the result from ResultSet object
      while(rs.next())
      {
         System.out.println(rs.getString(1));
      }

      //6. Close the Connection           
      con.close();
    }
    catch(Exception e)
    {
       System.out.println(e.toString().trim());
    }
  }
}

它显示错误java.lang.classnotfoundexception:com.mysql.jdbc.driver
如何建立连接？？