Learn about native memory allocation in the JVM and how to track it.

A quick and practical guide to lock-free data structures in Java.

Compare BitSets and boolean[] in terms of performance in different scenarios

An intro to the fork/join framework presented in Java 7 and the tools to help speed up parallel processing by attempting to use all available processor cores.

Learn about the differences between String casting and executing the toString() method in Java.

Learn how to extend Enums in Java.

Learn about the transient keyword and see its behavior through examples

A quick and practical guide to Java NIO2 Asynchronous FileChannel API

A quick and practical overview of A* Pathfinding Algorithm in Java.

A quick and practical guide to filtering Streams of Optionals in Java 8 and Java 9

As Java developers, we often need to switch between different versions of the JDK for different projects. SDKMAN! makes this easy.

Explore different ways to override the system time for testing.

2 million virtual threads with Loom, reactive to coroutines, cloud-native Spring Boot, working effectively with databases and context matters!

How to remove all nulls from a List using plain Java, Guava, the Commons Collections framework or the new Java 8 lambda support.

How to use the Guava Splitter and Joiner to convert to and from collections and Strings.

Explore different ways to break from a loop in Java.

Explore the difference between skip() and limit() methods in the Java 8 Stream API.

Learn about Java static fields, static methods, static blocks and static inner classes.

When building RESTful APIs over HTTP the PUT method is typically used for updating, while POST is used for creating resources. However, create and update