must known frameworks/libs/tech, every senior java developer must know(?)

• config

  32 6,088 4.5 Java

  configuration library for JVM languages using HOCON files

  

Typesafe Config

• SLF4J

  23 2,255 7.8 Java

  Simple Logging Facade for Java

  

SLF4J

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• RxJava

  15 47,621 8.4 Java

  RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

  

You all beat me to MapStruct and Testcontainers. Honorable mention to RxJava, which I use in Desktop apps.

• picocli

  29 4,705 8.6 Java

  Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.

Picocli

• MapStruct

  24 6,785 7.8 Java

  An annotation processor for generating type-safe bean mappers

  

You all beat me to MapStruct and Testcontainers. Honorable mention to RxJava, which I use in Desktop apps.

• jqwik

  7 521 9.2 Java

  Property-Based Testing on the JUnit Platform

  

Jqwik - I love property based testing and the way it can make you think differently about some of your code.

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