DeliberateException.java Source code

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/*
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
     http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
   <servlet>
  <servlet-name>DeliberateException</servlet-name>
  <servlet-class>DeliberateException</servlet-class>
   </servlet>
   <servlet-mapping>
  <servlet-name>DeliberateException</servlet-name>
  <url-pattern>/deliberateException</url-pattern>
   </servlet-mapping>
</web-app>
*/

import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class DeliberateException extends HttpServlet {
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        throw new NullPointerException();
    }

    public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException {
        ServletOutputStream out = res.getOutputStream();
        res.setContentType("text/html");
        out.println("<html><head><title>Exception Thrower</title></head>");
        out.println("<body>You'll never see this!</body></html>");

    }
}