Actuator is a software module you can add to any Spring Boot project to expose many features for monitoring and managing the application. This article describes how to use and configure one of the essential features of Actuator, the “info” endpoint.
In this article, I am going to show you something a little fun, how to draw a nice heart shape using only two Bézier curves with the Java 2D API. This is also a good opportunity to explain some concepts about Bézier curves in an enjoyable way.
If you have been using Spring Boot for a while, sometimes you may have encountered a failure when launching an application. One common and frequent case is when the application is already running, and you try to re-run the application (or another application that uses the same server port). In this case, Spring Boot logs…
Spring Boot directly supports three well-known JSON binding libraries: Jackson, Gson, and JSON-B (note that the latter is, more precisely, a specification). JSON binding is typically used in REST web services, but you can use it in several other contexts. In this article, I will explain how to integrate these libraries in Spring Boot (mainly…
I often use logback in my personal/demo Java projects because it is easy to use and configure. Logback is also an implementation of the SLF4J API, so there is no need for an explicit binding artifact. In this article I talk about a very specific feature of logback, the implementation of property definers to define…
SLF4J (www.slf4j.org) is a logging “facade” library that is very popular among Java developers because it is used by many frameworks and libraries. SLF4J has recently been updated to version 2.0.x. In this article, I will explain the new features of SLF4J 2.x.
The NIO.2 (“New Input/Output 2”) is a new API introduced in JDK 7 to operate more efficiently and uniformly on file systems. This new API covers many file and directory-specific aspects, such as handling attributes and symbolic links. This article discusses one of the most straightforward aspects of NIO.2, listing directory entries using the new DirectoryStream…
The well-known Java Collections Framework (JCF), introduced in JDK 1.2, contains two of the most essential and widely used collections, ArrayList and Vector. Moreover, these two collections are very similar in concepts and functionality. Therefore they lend themselves well to being compared.
Java 10, released on March 2018, has introduced the new “var” syntax. This small but helpful feature allows you to declare local variables using the word “var” instead of specifying the variable type. This article is focused on describing all the essential rules about this new feature clearly and concisely.
The Stream API is one of the great features introduced in the JDK 8 release. You often use the Stream API to operate on values from standard collections, files, databases, or other data structures. However, sometimes you need to create a new stream from scratch. Furthermore, in some situations, you may need to create a…