Contents:

• Resources
  • Core functionality
  • SQL libraries
  • Database migrations
  • Frameworks
  • Tools
• Setup
  • SDKMan!
  • OpenJDK Builds
• Resources / Links
  • Dependency injection / CDI

Resources #

Core functionality #

• Guava;
• Vavr: persistent collections, Scala-inspired;
• PCollections: persistent collections;

SQL libraries #

• Hibernate: ORM, and I hate ORMs;
• JDBI: light layer on top of JDBC, string-based queries;
• jOOQ: type safe SQL, alternative to Hibernate;

Database migrations #

• Flyway;
• Liquidbase;

Frameworks #

• Dropwizard;
• Quarkus: built for compatibility with GraalVM’s native image;
• Spring Boot (see the initializer);

Tools #

• Gradle: the accepted Maven alternative;
• JBang: scripting with Java;

Setup #

SDKMan! #

Install:

https://sdkman.io/install

To list available Java SDKs:

sdk list java

To install:

# OpenJDK
sdk install java 11.0.2-open

# GraalVM
sdk install 22.2.r17-grl

# Oracle
sdk install 17.0.4-oracle

After the installation of GraalVM, add this to .zshrc:

export GRAALVM_HOME=$HOME/.sdkman/candidates/java/22.2.r17-grl/

Also install the native-image:

${GRAALVM_HOME}/bin/gu install native-image

OpenJDK Builds #

Noteworthy:

• Eclipse Temurin: the old AdoptOpenJDK;
• IBM Semeru: these are the new OpenJ9 builds;
• jdk.java.net: reference OpenJDK builds;

Also see: JDK distributions.

Resources / Links #

• New Developer Friendly Features After Java 8 — Piotr Mińkowski;
• New language features since Java 8 to 18 — Dávid Csákvári;

Dependency injection / CDI #

• Quarkus / CDI and “java config” DI definitions;
  • Composition Root;