一个很简单的程序！！
我用jdk1.3编译，出错！ 是我环境没配好吗？
源代码如下：
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class HelloWorldBean extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws IOException, ServletException
    {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("");
        out.println("");
        out.println("");
        out.println("Hello World!");
        out.println("");
        out.println("");
        out.println("Hello World!");
        out.println("");
        out.println("");
    }
}

following is the Error Info:
////////////////////////////////////////////////////////////
HelloWorldBean.java:2: package javax.servlet does not exist
import javax.servlet.*;
^
HelloWorldBean.java:3: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
HelloWorldBean.java:5: cannot resolve symbol
symbol  : class HttpServlet  
location: class HelloWorldBean
public class HelloWorldBean extends HttpServlet {
                                    ^
HelloWorldBean.java:7: cannot resolve symbol
symbol  : class HttpServletRequest  
location: class HelloWorldBean
    public void doGet(HttpServletRequest request, HttpServletResponse response)
                      ^
HelloWorldBean.java:7: cannot resolve symbol
symbol  : class HttpServletResponse  
location: class HelloWorldBean
    public void doGet(HttpServletRequest request, HttpServletResponse response)
                                                  ^
HelloWorldBean.java:8: cannot resolve symbol
symbol  : class ServletException  
location: class HelloWorldBean
    throws IOException, ServletException
                        ^
6 errors

将servlet.jar加入类路径下