Play Custom Json Result

Application.java

package controllers;

import static controllers.result.CustomJsonResult.renderCustomJson;

import java.util.Arrays;
import java.util.List;

import play.mvc.Controller;

public class Application extends Controller {

    public static void index() {
        Double d = 2.02121;
        String s = "ttt";
        int a = 5;
        List<String> names = Arrays.asList("abuzer", "kadayıf");
        String bb = "ds";
        renderCustomJson(names, a, s, d);
        // 404 status kodu ile
        // renderCustomJson(404, names, a, s, d);
    }
}

CustomJsonResult.java

package controllers.result;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import play.classloading.enhancers.LocalvariablesNamesEnhancer.LocalVariablesNamesTracer;
import play.exceptions.UnexpectedException;
import play.mvc.Http.Request;
import play.mvc.Http.Response;
import play.mvc.results.Result;

import com.google.gson.Gson;

public class CustomJsonResult extends Result {

    private final String json;
    private final int status;

    private CustomJsonResult(final Object... args) {
        if (args.length > 0 && args[0] instanceof Integer
                && LocalVariablesNamesTracer.getAllLocalVariableNames(args[0]).isEmpty()) {
            this.status = (Integer) args[0];
        } else {
            this.status = 200;
        }

        Map<String, Object> result = new HashMap<String, Object>();
        for (Object o : args) {
            List<String> names = LocalVariablesNamesTracer.getAllLocalVariableNames(o);
            for (String s : names) {
                result.put(s, o);
            }
        }

        this.json = new Gson().toJson(result);
    }

    @Override
    public void apply(final Request request, final Response response) {
        try {
            response.status = this.status;
            String encoding = this.getEncoding();
            this.setContentTypeIfNotSet(response, "application/json; charset=" + encoding);
            response.out.write(this.json.getBytes(encoding));
        } catch (Exception e) {
            throw new UnexpectedException(e);
        }
    }

    public static void renderCustomJson(final Object... args) {
        throw new CustomJsonResult(args);
    }

}