新手请教用JavaBean连接orcal 10g数据库的代码怎么写？

用的 myEclipse 最后后再麻烦讲解下网上说的设置几个属性,生成一个无参的构造方法,生成get,set 方法  这个是什么意思要怎么操作 --------------------编程问答-------------------- DBConn.class的代码如下：

import java.sql.Connection;
import java.sql.DriverManager;

public class DBConn {

Connection dbConn;
String dbUrl = "jdbc:oracle:thin:@127.0.0.1:1521:XE";
String dbUser = "system";
String dbPwd = "tiger";
String err;

public DBConn() {
  err = "";
  dbConn = null;
}

// 连接数据库，返回一个 Connection类型对象
public Connection getConn() {

  try {
   Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();

   dbConn = DriverManager.getConnection(dbUrl, dbUser, dbPwd);
  } catch (Exception ex) {
   dbConn = null;
   err = ex.toString();
   System.out.println(err);
  }
  return dbConn;

}

// 获得错误信息
public String getErr() {
  return err;
}

}

index.jsp的代码如下：

<%@ page language="java" import="java.sql.*" pageEncoding="GB2312"%>
<%@page import="jqqdcom.DBConn"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<jsp:useBean id="DBConn" class="jqqdcom.DBConn" scope="page" />
<%!
    //定义数据库连接对象dbCon
    Connection dbCon;
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

  </head>

  <body>
   <h1 align="center">JDBC连接数据库实例</h1>
   <%
   //获取数据库连接对象
   dbCon = DBConn.getConn();
   if(dbCon!=null)
   {
    out.println("<p align=\"center\"><font color=blue>数据库连接成功</font></p>");
    }
    else
    {
    out.println("<p align=\"center\"><font color=red>数据库连接失败</font></p>");
    out.println(DBConn.getErr());
    }
    %>
  </body>
</html>

补充：Java ,  Java EE

新手请教 用JavaBean连接orcal 10g数据库 的代码怎么写 ？

新手请教用JavaBean连接orcal 10g数据库的代码怎么写？