Tag: Java

utility-tools
/ Clean code

Are static utility classes bad?

Static utility classes are common in libraries and in user code. For example Java Math for basic mathematical calculations or DateUtils to operate on Date/LocalDate objects. It’s not always wrong to create and use them but sometimes using utility methods are considered code smell. I’ll try to explain when and why use or not to …

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mind map image
/ Learning

Java Mind Map

Java mind map is useful tool when you want to learn Java from scratch. Or if you are already experienced developer and you want to refresh your knowledge. Below you see a full Java mind map with general topics. It is based on Oracle documentation and some interview questions. I decided to share this mind …

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hexagonal_architecture monolith-to-microservice
/ Clean code

Monolith to microservice

In last few years “microservices” term was very popular and almost everyone wanted to migrate their systems to such architecture. But what’s wrong with monolithic applications you may ask. Actually nothing. Monolith apps are as good as microservice apps. It’s not the case what is better. I don’t want to discuss what are the benefits …

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/ Clean code

Best practice for passing method arguments

In this article I will present simple yet effective best practice for making code more readable by changing method arguments. It’s a good practice to only pass values, that the method requires, everything else ruins readability and causes tests to be more complicated. Following this simple rule we will check how it really affects code …

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/ Linux

Install Oracle Java JDK 10 on Ubuntu 17.10

In this article we will quickly install Oracle Java JDK 10 on Ubuntu 17.10 machine from terminal. There are multiple methods of doing it, some more easy and some more sophisticated, like using bash scripts. It always depends on use case, but we will do it as simple as it can be. For this moment …

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