如何用Java实现随机出题？

来源：百度知道 编辑：UC知道 时间：2024/05/21 10:54:14
举个例子来说，要做一个随机出题的页面，要求当用户打开页面时，系统可以从已经准备的几套题中随机选出一套给用户做。

请问用JAVA如何实现上述例子呢？（请给出关键的源代码，谢谢！）

import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import oracle.jdbc.driver.OracleDriver;

public class GenPaperServlet extends HttpServlet
{

Connection conn;
Statement stmt;
ResultSet rs;
int total_question_num;
int total_question_in_paper;
int total_paper_num;
String curr_classid;

public GenPaperServlet()
{
conn = null;
stmt = null;
rs = null;
total_question_num = 0;
total_question_in_paper = 0;
total_paper_num = 0;
curr_classid = "";
}

public void doGet(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
throws ServletException, IOException
{
httpservletresponse.setContentType("text/html;charset=GBK");
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