从小卖蒸馍歌曲歌词:java数据库查询问题

我的这个就查询不能用 代码有错吗
package dpxt;
import java.sql.*;

public class TestDB {

static String MyDriver="sun.jdbc.odbc.JdbcOdbcDriver";
static String ConnStr="jdbc:odbc:cjgl";
static Connection conn;
//static ResultSet rs=null;

public static void main(String args[]){
try{
Class.forName(MyDriver);
System.out.println("成功加载JDBC-ODBC桥驱动程序");
}
catch(ClassNotFoundException e){
System.err.println("加载失败");
}

try{
conn=DriverManager.getConnection(ConnStr,"sa","");
System.out.println("连接成功");
}
catch(SQLException e){
System.err.println("连接失败");
}

try{
//String selsql="select student_no,sudent_name from student";
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("select * from student");

//stmt.executeUpdate("insert into student values('1005','菜熊','男')");
while(rs.next())
{
System.out.println(rs.getString("student_no"+"student_name"+"student_sex"));
}
rs.close();
conn.close();
//System.out.println("更新成功");
}
catch(SQLException e)
{
System.err.println("数据库查询失败");

}

}

}