private String JsonUsername(String username) {
        JsonObject jasonObject1 = Json.createObjectBuilder().add("username", username).build();
        StringWriter stringwriter = new StringWriter();
        try (JsonWriter jsonwriter = Json.createWriter(stringwriter)) {
            jsonwriter.write(jasonObject1);
        } catch (Throwable t) {
            t.printStackTrace();
        }
        System.out.println("USername: " + stringwriter.toString());
        return stringwriter.toString();
    }