Java recap for week 15/2025

From 7/4/2025 to 13/4/2025

Articles #

• Clarification on Map!<String!, String!> Behavior When Retrieving Non-Existent Keys 65 comments in 1 discussion

• Cutting 70% of Infra Costs with Go: A benchmark between Go, NextJS, Java and GraalVM 30 comments in 2 discussions

• There’s a new Exposed website! (With a nifty Kotlin/SQL slider ✨) 15 comments in 1 discussion

• Update on Context Parameters 8 comments in 1 discussion

• Synchronous Communication With Apache Kafka Using ReplyingKafkaTemplate 5 comments in 1 discussion

• Shared schema Multitenancy in Hibernate 6 4 comments in 1 discussion

• Free Video Course - Foundations of AI and Machine Learning for Java Developers 4 comments in 1 discussion

• A Deep Dive into JVM Startup

• Bringing Fuzz Testing to Kotlin with kotlinx.fuzz

• Resource Injection in Java (Deepdive help/suggestions)

• Refining var-handles in Valhalla -- John Rose

• Convenient Detekt Conventions (for Gradle)

• Java 21 Coding Practice Example- Hospital Management System

• Voxxed Days Amsterdam 2025 recordings have just been published!

• Top 50 Java Programs from Coding Interviews

Projects #

• sqlx4k: A high-performance, non-blocking database driver for PostgreSQL, MySQL, and SQLite, written for Kotlin Native. 62 comments in 10 discussions

• I have translated the whole java guide to English 9 comments in 1 discussion

• JApp: A new packaging format for Java programs 9 comments in 1 discussion

• Show HN: Signum – Kotlin Multiplatform Cryptography and PKI Library

• Py4J: Enables Python programs to dynamically access arbitrary Java objects

• Kotlin JSON Stream Serializer

Videos #

• Kotlin 2.1.20 - Atomics, UUIDs, and more - TypeAlias Show Livestream 2 comments in 1 discussion

• Custom Multiple Date Picker in Android Using Kotlin 🚀 | Beginner to Adva...

• JavaOne'25 Highlights

• Coupling, Cohesion & ClassGraph