Autowired annotation from Spring Framework is a wonderful thing. It makes a development of complex applications pretty easy, objects appear in your class automagically! You just splat an annotation on a field and voila! Magic happens. But it’s not a magic bullet that you should plug in everywhere.
The 2017 4Developers Festival has come to a pass and it was awesome! For me, this is the obligatory conference that I plan to attend every year from now on. I have been on total o 7 hours of lectures and 2 hours of discussion. All of this time was worth it. Only one lecture of these was a bit weaker, but it still was really informative!
Oh, and you can get cool cups there too 😉
Here’s a quick summary of the most interesting things for me.
RxJava and Retrofit. Two really good java libraries that I recently started playing with. RxJava is a java implementation of Reactive Streams standard. It is a specification of API for processing asynchronous processing of streams. RxJava, now in version 2, is a pretty mature implementation of standard and offers a wide array of tools for use with streams. It supports basic operations like map, reduce, filtering, grouping, joining, sorting, time operations like delay, timeout, interval, window, error handling with retrying and many more. Its API is just huge, it probably has everything you may need.
Retrofit is something different and much more simple. It’s just a HTTP client library, a typed HTTP client library! It lets you easily define a java interface for remote Rest service with just a few annotations. Thanks to this, you can use your rest service like plain, local, java service, just invoke a method, pass parameters and get the results, simple as that. Oh, and it has support for RxJava, so these two play with each other really nice.
Documentation is important, everybody knows this, especially when you are the one who needs to use some third party service or library. Without good documentation it’s often a living hell, it’s like walking through a minefield. You carefully take step after step, praying that things won’t blow up. That’s why you HAVE to create documentation, especially for your libraries and REST services. Another important thing about documentation is that you have to update it whenever code changes because the only worse thing than no documentation is wrong documentation, a documentation that is not valid for the current code base.
So if everybody knows about this, it should be ok, right? Wrong. Developers hate creating documentation and they do not do it unless it is really necessary or someone makes them do it – and unfortunately that statement is also true for me. Creating documentation is not bad, but maintaining it, may be hard, especially when you have a critical bug after bug to fix, and deadlines closing in – you just don’t have time to do it.
But there is hope… you can generate it!
I did not manage to get an idea for another, third, project, so I have to choose from those two that I described before. The choice wasn’t easy because both of these projects would be fun to do. Some of you advised me already on which one of these two do, even though I’m sure that you guys would not use it ;). And I have my own preferences in terms of which app I would use daily. But let’s look at this from another perspective.
In my last post, I have described one of my ideas for a project that I could try to develop for "Get Noticed!" competition. It is something that I would use personally on daily basis, so it really makes me want to do it. If you haven’t read about it, head to part 1 to check it out. But there is also another project that I have in mind, unfortunately, this one is not so well planned as the first one. Here’s what it is about.