It is very common that you want to add some unique key constraint in your database schema. Say for a online shopping system you have the following entity: public class CreditCard { private UUID id; private long number; private long customerId; private String nickname; ...
Hello everyone, how are you doing? I'm sorry that I didn't introduce myself in my previous blog. I just forgot to do so, lol. I'm Lanbo, a newbie back-end software engineer at Tagbangers. And as a newbie who is not talented, I faced many problems on the road of programming. By solving the problems ...
What is Amazon Web Services (AWS)? Well, AWS is the web services provided by Amazon. A pretty straight forward name, isn't it? Okay, okay. I know the "explanation" above does not really help, but I am trying to avoid answering "what is AWS" directly, on purpose. AWS includes various services and res...
Handling a validation can be quite a mess depending on the case, but let’s have a look at a simpler example for validating an empty field. // my-form.html ... Validating an empty field is pretty simple as we can use the TKNonEmptyValidator tag for disp...
日本語版はこちら Hi! It's me again and this time I'll be sharing on how to automatically compile our scss file with gulp, which is very useful for web development. Ok, let's get started! Installing gulp, gulp-sass as a dev dependency $ npm install gulp gulp-sass -D Sample directory what we'll need: source ...
Hi there! I'm Sylvester and I've been working here like 6 months I guess? So I've been working on some projects and one of the projects is app development for android. It was my first time working on an app, of course. I came across a few terms during the project and one of them is "async task". So ...
Hi there! I Guess I'll start with a self-introduction. My name is Sylvester Abeng, and I'm from Kuching, Malaysia (yes, google it). I recently started my very first job at Tagbangers last May and yes, I had almost zero knowledge about web development. So for the first few weeks, I've been learning ...
I would like to write about using AWS CodeStar to develop and build applications quickly deploy to AWS in this article. Following simple steps below you can quickly launch CodeStar service in AWS. • Step 1: Create an AWS Account • Step 2: Create the AWS CodeStar Service Role • Step 3: Create or Use ...
When I started learning how to code, I had no idea that there was such thing as a "test" in coding. But there is, and it turns out they have numerous benefits. This "test" that I am talking about is not like literally compiling and running your code to see if it works right. Testing (or "unit testi...
For the past two weeks I've been studying how to use threads and sockets in Java. And as a practice of the stuff I learned, this week I made a very basic console chat application. The source code can be seen here. What I've made This chat application works by running two programs, a server program a...
