The main differences between the WatchService API from the JDK and the Apache Commons IO Monitoring Library for tracking changes in the filesystem.

A quick and practical guide to inner interfaces in Java.

See how to zip collections in Java using plain Java and external tools.

Learn how the in-place sorting algorithm works.

Learn different ways to split a Java String by newline characters

Learn how to create and work with multidimensional ArrayLists in Java.

A quick and practical guide to XML Java tools

In this article, we'll look at how the Axon framework supports Aggregates with multiple entities.

Learn about Java's InterruptedException, what causes it, and how to handle it.

A quick and practical guide to ConcurrentMap in Java.

Learn about IntelliJ's dedicated stream debugging feature with a few simple examples

A quick and practical introduction to Java Errors.

Learn how to write trace logging output when calling methods of configured classes using AspectJ.

Learn to construct a JPA query between unrelated entities.

An overview of Java's StringBuilder and StringBuffer, pointing out similarities and differences.

Interested to learn about Java Records? Check our article talking about Java's 16 new feature, the records with examples.

How to map a JSON Array correctly in a type-safe manner to a Java Collection.

Intro to writing clean unit tests with Mockito.

Learn how you can implement STM in your application with the help of Multiverse library.