java 连接数据库 sqlserver2000 急待解决！！！！

import java.sql.*;
public class coffees{
public static void main(String args[]){
try
{ System.out.println("aaaaaaaaaaaaaaaa");
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
System.out.println("aaaaaaaaaaaaaaaa");
String url="jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=pubs";

String user="sa";
String password="";
Connection conn=DriverManager.getConnection(url,user,password);
System.out.println("aaaaaaaaaaaaaaaa");
Statement stm=conn.createStatement();
System.out.println("aaaaaaaaaaaaaaaa");
String sql="select * from sales";
ResultSet rs =stm.executeQuery(sql);
while(rs.next()){
System.out.println(rs.getString(1));
}
}
catch (Exception e)
{
e.printStackTrace(