ff

以下一个简单的servlet例子
import javax.servlet.*;
import java.io.*;
import javax.servlet.http.*;
public class simplehello extends HttpServlet{
pulbic void doGet(HttpServletRequest req,HttpServletResponse resp) throws ServletException,IOException
{

   PrintWriter out=resp.getWriter();
out.println("hello world");
out.close();
}
}
编译时出错如下
C:\Program Files\Apache Software Foundation\Tomcat 5.0\webapps\ch06\src>javac si
mplehello.java
simplehello.java:5: <identifier> expected
        pulbic void doGet(HttpServletRequest req,HttpServletResponse resp) throw
s ServletException,IOException
               ^
simplehello.java:12: ';' expected
}
^
2 errors请教错在那里!!不胜感激!!