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import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class HelloServlet extends HttpServlet {
  public void doGet(HttpServletRequest request, 
HttpServletResponse response) 
throws ServletException, IOException
{
PrintWriter out = response.getWriter();
out.println("Hello World");
}
}
web.xmlÅäÖÃÈçÏ£º
<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
  PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
  "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
<servlet>
<servlet-name>HelloWorld</servlet-name>
<servlet-class>HelloServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern>/Hello</url-pattern>
</servlet-mapping>
</web-app>
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type Exception report


message

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exception

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