Java开发网 - Re:是不是ＳＱＬ语句错了？！不解中．．．

Java开发网

您没有登录

» Java开发网 » Servlet/JSP/JSF/JavaFX Script

打印话题 寄给朋友 订阅主题

作者

Re:是不是ＳＱＬ语句错了？！不解中．．． [Re:wind520sand]

wind520sand

发贴: 36

于 2005-09-18 09:29

这就是我的ConDB.java了,斑竹帮我看看我什么地方错的.谢谢了

package wind;
import java.sql.*;
public class ConDB
{
private String url = "jdbc:mysql://localhost:3306/first2?user=root&password=root";
private String driver = "com.mysql.jdbc.Driver";
private Connection con = null;
private ResultSet rs = null;
public ConDB()
{
  try {
Class.forName(driver).newInstance();
} catch (ClassNotFoundException ex) {
System.out.println("Classnotfound");}
catch (IllegalAccessException ex){System.out.println("");}
catch (InstantiationException ex) {
System.out.println("Instantiation");
  }
}
public ResultSet executesql(String sql)
{
  try {
rs = null;
con = null;
con = DriverManager.getConnection(url);
Statement state = con.createStatement();
rs = state.executeQuery(sql);
}
catch (SQLException ex ){System.out.println("SQLException");}
return rs;
}
}

话题树型展开

人气	标题	作者	字数	发贴时间
2900	是不是ＳＱＬ语句错了？！不解中．．．	wind520sand	471	2005-09-17 14:50
2452	Re:是不是ＳＱＬ语句错了？！不解中．．．	chengbd	49	2005-09-18 05:24
2419	Re:是不是ＳＱＬ语句错了？！不解中．．．	Ada1979	20	2005-09-23 19:07
2464	Re:是不是ＳＱＬ语句错了？！不解中．．．	wind520sand	701	2005-09-28 09:18
2494	Re:是不是ＳＱＬ语句错了？！不解中．．．	wind520sand	1046	2005-09-18 09:29
2405	Re:是不是ＳＱＬ语句错了？！不解中．．．	wind520sand	31	2005-09-20 08:30
2412	Re:是不是ＳＱＬ语句错了？！不解中．．．	chengbd	23	2005-09-20 09:02
2320	Re:是不是ＳＱＬ语句错了？！不解中．．．	why	191	2005-09-20 12:00
2457	Re:是不是ＳＱＬ语句错了？！不解中．．．	java菜鸟2005	88	2005-09-20 15:35
2394	Re:是不是ＳＱＬ语句错了？！不解中．．．	wind520sand	30	2005-09-20 18:16
2421	Re:是不是ＳＱＬ语句错了？！不解中．．．	dennisjl	53	2005-09-22 09:40
2413	Re:是不是ＳＱＬ语句错了？！不解中．．．	沙漠小鸟	115	2005-09-22 13:07
2620	Re:是不是ＳＱＬ语句错了？！不解中．．．	beyond1984	1422	2005-09-23 10:32

已读帖子

新的帖子

被删除的帖子