Explore the difference between the junit-vintage-engine and the junit-jupiter-engine.

Learn how to generate the same UUID objects from a string.

In Java, an InputStream is a common way to read data from a source, such as a file or network connection, in a stream-oriented way. Often times, it is

Explore the difference between Java helper and utility classes

Several of us might be familiar with the clear () API in Java collections framework. In this post, let’s discuss what is the purpose of this clear() API?

Explore two simple ways to deserialize a JSON string into an object with a generic type.

Learn some key differences between sourcepath and classpath. Explore their usage in the command line.

Increased GC throughput, writing a profiler from scratch, faster JVM startup, Java 20, and large language models!

Previously we saw some of the building blocks of concurrency in Java. In this blog we will focus on ReentRantLock. ReentRantLock is based on the

THe OpenJDK 21 beta 15 early access build (released 23 March 2023) adds an -Xlint warning to the Java compiler to notify Java developers when a class's

Virtual threads in Java 21, Java profilers, a new build system for Java, auto-explain for Postgres, and Generative AI!

Learn the difference between the classpath and the build path in Java.

Learn how to configure a custom source directory for protobuf files.

Explore JUnit5's new @Timeout annotation.

A quick and practical guide to constructing complex nested mappers with MapStruct.

Explore strategies for parsing multiple date formats at once.

Learn how to convert an integer value to hexadecimal in Java.

Explore the advantages of reusing a StringBuilder and explore a concrete example of how to do it.

Learn about Elasticsearch shards and replicas.

Explore Java Modularity and learn how it affected the testing in Java applications.

Java has a built in UUID generator. We compare this to some other solutions which can be more secure or performant.