public 类为什么不能引用?
这是原代码:
package com;
import java.io.*;
import java.sql.*;
import javax.servlet.http.*;
import javax.sql.*;
import java.util.*;
public class Lianjie{
Connection con=null;
private final String
url="jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=madongjing";
private final String user="sa";
private final String psw="madongjing";
public void addUser(yonghu yong)throws SQLException,Exception
{
try{
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
con=DriverManager.getConnection(url,user,psw);
Statement statement=con.createStatement
(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
statement.execute("insert into login values('"+yong.getYonghuming()
+"','"+yong.getMima()+"')");
statement.close();
con.close();}
catch(SQLException e)
{
e.printStackTrace();
}
catch(Exception e)
{e.printStackTrace();
}
}
}
出现yonghu类不能用,yonghu是我在com包下的另一个类,弄了好久就是不对 ,请大家帮帮忙啊,谢谢了