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 ...
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 ...
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...
Hi, it's Yu again. Not you, it's me, Yu. I know right. It's such a confusing name. In the last article, I did a brief recap on the first month as an Intern. I've created a list of things I've done, but that was it. There wasn't much explanation on how and why I did those things, and the problems I'v...
When I started to work here I was creating a web server for learning, but I did't have a chance to complete it. So recently, I started to work on it again to have a better understanding about the web. In this article, I'm going to right about how networking between a client and a server works. To s...
You know what "import" is in Java, right? But how do they accurately choose the right classes to import in the first place? And how do they call the methods? Well if you were to call PrintTagbangers from a Main class, it should look something like this: Main.java package com.example.sample2; impo...
If you're a programmer, at some point you should have faced the struggle of coming up with a good name for your classes, methods, and variables. You should have regretted looking back at your old code, thinking something like "how the hell did I come up with such a lame name?", or "I should've named...
These are examples that implement the Post-Redirect-Get pattern in Spring MVC. Code is also in GitHub. https://github.com/tagbangers/spring-best-practice... Pattern1: Not using the session package practice.post_redirect_get; import org.springframework.stereotype.Controller; import org.springframew...
