Java Servlets Sample

/*
 * @(#)Elements.java
 *
 * Copyright (c) 1998 Karl Moss. All Rights Reserved.
 *
 * You may study, use, modify, and distribute this software for any
 * purpose provided that this copyright notice appears in all copies.
 *
 * This software is provided WITHOUT WARRANTY either expressed or
 * implied.
 *
 * @author  Karl Moss
 * @version 1.0
 * @date    16Feb98
 *
 */

package javaservlets.samples;

import javax.servlet.*;
import javax.servlet.http.*;

/**
 * <p>This is a simple servlet that will return a list of
 * periodic elements.
 */

public class Elements extends HttpServlet
{
  /**
    * <p>Performs the HTTP GET operation
    *
    * @param req The request from the client
    * @param resp The response from the servlet
    */

  public void doGet(HttpServletRequest req,
                    HttpServletResponse resp)
    throws ServletException, java.io.IOException
    {

      // Create a PrintWriter to write the response
      java.io.PrintWriter out =
        new java.io.PrintWriter(resp.getOutputStream());

      // Set the content type of the response
      resp.setContentType("text/html");

      // Print the HTML header
      out.println("<html>");
      out.println("<head>");
      out.println("<title>Java Servlets Sample - " +
                  "Periodic Elements</title>");
      out.println("</head>");
      out.println("<h2><center>");
      out.println("The Periodic Elements</center></h2>");
      out.println("<br>");

      // Output special table formatting instructions for
      // the TableFilter servlet
      
      out.println("<!--table columns=2 header=yes-->");

      // Output the table
      out.println("Symbol,Element");
      out.println("Ac,Actinium");
      out.println("Ag,Silver");
      out.println("Al,Aluminum");
      out.println("Am,Americium");
      out.println("Ar,Argon");
      out.println("As,Arsenic");
      out.println("At,Astatine");
      out.println("Au,Gold");
      out.println("B,Boron");
      out.println("Ba,Barium");
      out.println("Be,Beryllium");
      out.println("Bi,Bismuth");
      out.println("Bk,Berkelium");
      out.println("Br,Bromine");
      out.println("C,Carbon");
      out.println("Ca,Calcium");
      out.println("Cd,Cadmium");
      out.println("Ce,Cerium");
      out.println("Cf,Californium");
      out.println("Cl,Chlorine");
      out.println("Cm,Curium");
      out.println("Co,Cobalt");
      out.println("Cr,Chromium");
      out.println("Cs,Cesium");
      out.println("Cu,Copper");
      out.println("Dy,Dysprosium");
      out.println("Er,Erbium");
      out.println("Es,Einsteinium");
      out.println("Eu,Europium");
      out.println("F,Fluorine");
      out.println("Fe,Iron");
      out.println("Fm,Fermium");
      out.println("Fr,Francium");
      out.println("Ga,Gallium");
      out.println("Gd,Gadolinium");
      out.println("Ge,Germanium");
      out.println("H,Hydrogen");
      out.println("He,Helium");
      out.println("Hf,Hafnium");
      out.println("Hg,Mercury");
      out.println("Ho,Holmium");
      out.println("I,Iodine");
      out.println("In,Indium");
      out.println("Ir,Iridium");
      out.println("K,Potassium");
      out.println("Kr,Krypton");
      out.println("La,Lanthanum");
      out.println("Li,Lithium");
      out.println("Lr,Lawrencium");
      out.println("Lu,Lutetium");
      out.println("Md,Mendelevium");
      out.println("Mg,Magnesium");
      out.println("Mn,Manganese");
      out.println("Mo,Molybdenum");
      out.println("N,Nitrogen");
      out.println("Na,Sodium");
      out.println("Nb,Niobium");
      out.println("Nd,Neodymium");
      out.println("Ne,Neon");
      out.println("Ni,Nickel");
      out.println("No,Nobelium");
      out.println("Np,Neptunium");
      out.println("O,Oxygen");
      out.println("Os,Osmium");
      out.println("P,Phosphorus");
      out.println("Pa,Protactinium");
      out.println("Pb,Lead");
      out.println("Pd,Palladium");
      out.println("Pm,Promethium");
      out.println("Po,Polonium");
      out.println("Pr,Praseodymium");
      out.println("Pt,Platinum");
      out.println("Pu,Plutonium");
      out.println("Ra,Radium");
      out.println("Rb,Rubidium");
      out.println("Re,Rhenium");
      out.println("Rh,Rhodium");
      out.println("Rn,Radon");
      out.println("Ru,Ruthenium");
      out.println("S,Sulfur");
      out.println("Sb,Antimony");
      out.println("Sc,Scandium");
      out.println("Se,Selenium");
      out.println("Si,Silicon");
      out.println("Sm,Samarium");
      out.println("Sn,Tin");
      out.println("Sr,Strontium");
      out.println("Ta,Tantalum");
      out.println("Tb,Terbium");
      out.println("Tc,Technetium");
      out.println("Te,Tellurium");
      out.println("Th,Thorium");
      out.println("Ti,Titanium");
      out.println("Tl,Thallium");
      out.println("Tm,Thulium");
      out.println("U,Uranium");
      out.println("Une,Unnilennium");
      out.println("Unh,Unnilhexium");
      out.println("Uno,Unniloctium");
      out.println("Unp,Unnilpentium");
      out.println("Unq,Unnilquadium");
      out.println("Uns,Unnilseptium");
      out.println("Uub,Ununbium");
      out.println("Uun,Ununnilium");
      out.println("Uuu,Unununium");
      out.println("V,Vanadium");
      out.println("W,Tungsten");
      out.println("Xe,Xenon");
      out.println("Y,Yttrium");
      out.println("Yb,Ytterbium");
      out.println("Zn,Zinc");
      out.println("Zr,Zirconium");
      out.println("<!--end table-->");
      
      // Wrap up
      out.println("</html>");
      out.flush();
      out.close();
    }

  /**
    * <p>Initialize the servlet. This is called once when the
    * servlet is loaded. It is guaranteed to complete before any
    * requests are made to the servlet
    *
    * @param cfg Servlet configuration information
    */

  public void init(ServletConfig cfg)
    throws ServletException
    {
      super.init(cfg);
    }

  /**
    * <p>Destroy the servlet. This is called once when the servlet
    * is unloaded.
    */

  public void destroy()
    {
      super.destroy();
    }
}