import java.sql.*;
import java.util.*;

class JDBC_test
{
    public static void main(String[] args)
    {
           Connection con ;
        Statement stm ;
        ResultSet rs;
        String url ;
        
        try{
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            
            url = "jdbc:odbc:ymz";
            
            con = DriverManager.getConnection(url);
            
            stm = con.createStatement();
            
            rs = stm.executeQuery("SELECT * FROM sysusers");
            
            while(rs.next())
            {
                Vector vector = new Vector();
                //System.out.println("OK");
                for(int i=0;;i++)
                {
                    vector.addElement(rs.getObject(i+1).toString());
                                                               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                }
                //System.out.println("OK");
                //System.out.println(vector);
            }
            
            /*
            while(rs.next())
            {
                //int theInt = rs.getInt("uid");
                String str = rs.getString("createdate");
                System.out.println(str);
            }
            */
        }catch(Exception e){
            e.printStackTrace();
        }
        
    }
}

con = DriverManager.getConnection(url);
这个地方，好像好需要密码，用户名

你的数据库是SQL Server 2000吧，数据库连接是jdbc-odbc桥，这个要找xp下设置数据源。
这种方式不建议采用，用jdbc连接啊！上网搜搜！