Victor Rentea

Featured Author

Victor is a Java Champion, Speaker, and Independent Trainer with impressive experience: thousands of developers in over 40 companies followed his training or live-webinars until now. He is the founder of Bucharest Software Craftsmanship Community, one of the largest developer communities in Romania today, sharing his love for Clean Code, Refactoring, and Unit Testing every month.

Promoted Content

Step up your coding with the Continuous Feedback Udemy Course: Additional coupons are available

What do you know about the code changes that were just introduced into the codebase? When will you notice if something goes wrong?

Jakarta EE 11: Beyond the Era of Java EE

This user guide provides a brief history of Java EE/Jakarta EE and a detailed overview of some of the specifications that will be updated in Jakarta EE 11.

Stable, Secure, and Affordable Java

Azul Platform Core is the #1 Oracle Java alternative, offering OpenJDK support for more versions (including Java 6 & 7) and more configurations for the greatest business value and lowest TCO.

Likes 0

Comments 0

Shares 0

Articles 1

Views 2,8K

Avoiding NullPointerException

The terrible NullPointerException (NPE for short) is the most frequent Java exception occurring in production, according to a 2016 study. In this article we’ll explore the main techniques to fight it: the self-validating model and the Optional wrapper. You should consider upgrading your entity model to either reject a null via self-validation or present the nullable field via a getter that returns Optional. The effort of changing the getters of the core entities in your app is considerable, but along the way, you may find many dormant NPEs.

Dec 22 2,8K

Victor Rentea

Java Core

Retweet on Twitter Foojay.io Retweeted

So happy to see @OpenJDK uses #SonarCloud to guarantee High #CodeQuality for @java #Java25 @SonarSource

https://bugs.openjdk.org/browse/JDK-8357798

04:11 PM · February 16, 2026

Retweet on Twitter Foojay.io Retweeted

The hottest #Java unconference in the world is coming back 27-31 July 2026 (starting evening of 26th). Deep discussions about Java and life. We are making some seats available using a lottery system. Draw will be on Friday the 20th Feb. Sign up here: https://www.jcrete.org/lottery

08:45 PM · February 09, 2026

Retweet on Twitter Foojay.io Retweeted

Confession: I usually lose the Flow switching between Quality Gates and Code 📉😅

But I connected @claudeai + #SonarQube via #MCP

Verify & Fix vulnerabilities without touching the mouse.
Zero context switching. Pure flow. 🚀

https://foojay.io/today/claude-code-sonarqube-mcp/

#Java #AI @foojayio

03:56 PM · February 02, 2026