用tomcat + java jdbc 连接使用Oracle数据库

<%@ page language="java" import="java.sql.*" pageEncoding="GBK"%>
<%!String DBDRIVER = "oracle.jdbc.driver.OracleDriver";
String DBURL = "jdbc:oracle:thin:@localhost:1521:orcl";
String USERNAME = "scott";
String PASSWORD = "orcl";

Connection conn = null;
Statement stmt = null;%>

<%
try {

//实例化驱动程序
Class.forName(DBDRIVER);
out.println("驱动实例化成功！");
conn = DriverManager.getConnection(DBURL, USERNAME, PASSWORD);
out.println("链接数据库成功！");
String sql = "CREATE TABLE mldntab (name varchar(20))";

stmt = conn.createStatement();
stmt.executeUpdate(sql);

out.println("表格已经创建！！");

} catch (Exception e) {

out.print("数据库操作出现问题！表格创建失败！" + e);
}
%>