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foojay is a place for friends of OpenJDK, providing free, reference materials and blogs for daily Java usage.

Learn how to Ingest streaming time-series data from Apache Kafka into QuestDB using ILP with the Kafka Sink Connector.

Join our interview with Java expert Shai Almog, as he shares his journey and offers valuable advice for developers, discussing mentorship …

Did you know bots can automatically create pull requests to keep dependencies secure and up to date? Find out here!

TornadoVM is a programming and execution framework for offloading and running JVM applications on multi-core CPUs, GPUs, and FPGAs.

Mar 25, 2023 Shai Almog

Stop digging through variables in the watch to find nuggets of gold, or rerunning the expression evaluation. Use entity renderers instead.

Learn how to use Firmata4j to control an Arduino board from a Raspberry Pi board or directly from your computer.

Mar 24, 2023 Fawaz Ghali

Learn how to treat logs and traces as part of a scalable cloud storage repository that can be analysed with the techniques used for big …

Mar 24, 2023 Fawaz Ghali

Learn to update a Java client to automatically connect to a secondary, failover cluster if it cannot connect to its original, primary …

Mar 24, 2023 Erik Costlow

A demonstration of log4j exploits, which defenses people tried, and which worked. We'll cover how groups responded effectively to patch to …

Path traversal vulnerabilities are a serious threat to Java web applications, amongst the top security issues Snyk finds in Java code.