Ce e o aplicatie web? De la aplicatii in consola la cele cu interfete web.

@WebServlet("/[aici url la care raspunde servletul]") public class ServletulMeu extends HttpServlet {
	class ElementDictionar()
	{
	public
		String cheie = "";
	public
		String valoare = "";
	public
		ElementDictionar(String cheie, String valoare)
		{
			this.cheie = cheie this.valoare = valoare
		}
	public
		String toJson()
		{
			return "{\"word\": \"<CHEIE>\",\"definition\": \"<VALOARE>\"}"
				.replace("<CHEIE>", cheie)
				.replace("<VALOARE>", valoare)
		}
	}
	class Dictionar()
	{
		ElementDictionar[] elemente = new ElementDictionar[1];
		String query = "";
		StringBuilder sb = new StringBuilder();
	public
		Dictionar(String query, ElementDictionar... elemente)
		{
			this.elemente = elemente;
			this.query = query;
			init();
		}
	public
		void init()
		{
			sb.append("Server:{\"query\":\"<QUERY>\",\n \"results\" :[".replace("<QUERY>", query));
			int totalElemente = elemente.size();
			for (int i = 0; i < totalElemente; i++) {
				if (elemente[i].cheie.indexOf(query) != -1) {
					sb.append(elemente[i].toJson() + (i != (totalElemente - 1) ? "," : ""));
				}
			}
			sb.append("]}");
		}
	public
		String toJson()
		{
			return sb.toString()
		}
	}
	@override public void doGet(HttpServletRequest req, HttpServletResponse ans)
	{
		String output = new Dictionar(
							req.getRequestParamater("toSearch"),
							new ElementDictionar("abcd", "A fine word"),
							new ElementDictionar("hello", "Another fine word"),
							new ElementDictionar("cdef", "Missing a few letters"))
							.toJson();
		ans.setContentType("application/json; charset=UTF-8");
		ans.getWriter().println(output);
	}
}

@WebServlet("/[aici url la care raspunde servletul]") public class ServletulMeu extends HttpServlet {
	LinkedHashMap<String, String>() data;
	@override public void init()
	{
		data = new LinkedHashMap<String, String>();
		data.put("abcd", "A fine word");
		data.put("hello", "Another fine word");
		data.put("cdef", "Missing a few letters");
	}
	pubic String process(String query)
	{
		StringBuilder sb = new StringBuilder();
		sb.append("Server:{\"query\":\"<QUERY>\",\n \"results\" :[".replace("<QUERY>", query));
		int k = 0;
		data.forEach((cheie, valoare)->{
  if (cheie.indexOf(query)!= -1)  {
   sb.append("{\"word\": \"<CHEIE>\",\"definition\": \"<VALOARE>\"}"
				   .replace("<CHEIE>", cheie).replace("<VALOARE>",valoare));
   sb.append( ((++k) != data.size()-1) ? "," :"" );
  } }) return sb.toString()
	}
	@override public void doGet(HttpServletRequest req, HttpServletResponse ans)
	{
		String output = process(req.getParamater("toSearch"))
							ans.setContentType("application/json; charset=UTF-8");
		ans.getWriter().println(output);
	}