java - how to write first servlet class in Eclipsed -

package com.example;  import java.io.ioexception; import javax.servlet.servletexception; import javax.servlet.annotation.webservlet; import javax.servlet.http.httpservlet; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse;  /**  * servlet implementation class helloworld  */ @webservlet("/helloworld")  public class helloworld extends httpservlet {     private static final long serialversionuid = 1l;      /**      * @see httpservlet#httpservlet()      */     public helloworld() {         super();         // todo auto-generated constructor stub     }      /**      * @see httpservlet#doget(httpservletrequest request, httpservletresponse response)      */     protected void doget(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {         // todo auto-generated method stub     }      /**      * @see httpservlet#dopost(httpservletrequest request, httpservletresponse response)      */     protected void dopost(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {         // todo auto-generated method stub     }  } 

i have created class hello-world , added servelte api getting error @webservlet("/helloworld") , show error messge [the attribute value undefined annotation type webservlet].

please tell me how fix it?

http://docs.oracle.com/javaee/6/api/javax/servlet/annotation/webservlet.html

try add atrribute value: @webservlet(value="/helloworld")