A repository to review the main concepts about Functional Programming with Java.
- Lambda Expressions
- Optionals
- Stream API
- CompletableFuture
- Immutable Lists
- Sealed Classes
- Pattern Matching for Switch
- Records & Record Patterns
| Java Version | Feature | Date | Release notes |
|---|---|---|---|
| Java 8 | - Lambda Expressions - Optionals - Stream API - CompletableFuture | 18/3/2014 | https://www.oracle.com/java/technologies/javase/8-whats-new.html |
| Java 9 | - CompletableFuture updates | 21/9/2017 | https://www.oracle.com/java/technologies/javase/9-all-relnotes.html |
| Java 10 | - Optionals updates - Immutable Lists | 20/3/2018 | https://www.oracle.com/java/technologies/javase/10-relnote-issues.html |
| Java 11 | - Not Predicate operator - Local-Variable Syntax for Lambda | 25/9/2018 | https://www.oracle.com/java/technologies/javase/11all-relnotes.html |
| Java 12 | - Teeing Collector - Pattern Matching | 19/3/2019 | https://www.oracle.com/java/technologies/javase/12-relnote-issues.html |
| Java 13 | - Switch Expressions enhancements | 17/9/2019 | https://www.oracle.com/java/technologies/javase/13-relnote-issues.html |
| Java 14 | - Records | 17/3/2020 | https://www.oracle.com/java/technologies/javase/14-relnote-issues.html |
| Java 15 | - Sealed Classes (Preview) | 15/9/2020 | https://www.oracle.com/java/technologies/javase/15-relnote-issues.html |
| Java 16 | - Sealed Classes (Preview) - Stream.toList | 16/3/2021 | https://www.oracle.com/java/technologies/javase/16-relnote-issues.html |
| Java 17 | - Sealed Classes (JEP 409) - Pattern Matching for Switch (JEP 406) (Preview) | 14/9/2021 | https://www.oracle.com/java/technologies/javase/17-relnote-issues.html |
| Java 18 | - Pattern Matching for switch (JEP 420) (Preview) | 22/3/2022 | https://www.oracle.com/java/technologies/javase/18all-relnotes.html |
| Java 19 | - Record Patterns - Pattern Matching for switch (JEP 427) (Preview) | 20/9/2022 | https://www.oracle.com/java/technologies/javase/19-relnote-issues.html |
| Java 20 | - Record Patterns (JEP 432) - Pattern Matching for Switch (JEP 433) (Preview) | 21/3/2023 | https://www.oracle.com/java/technologies/javase/20-relnote-issues.html |
| Java 21 | - Record Patterns (JEP 440) - Pattern Matching for switch (JEP 441) | 19/9/2023 | https://www.oracle.com/java/technologies/javase/21-relnote-issues.html |
| Java 22 | - Stream Gatherers (JEP 461) (Preview) | 19/3/2024 | https://www.oracle.com/java/technologies/javase/22-relnote-issues.html |
sdk env install
./mvnw clean test -DexcludedGroups=performance,endtoend
./mvnw clean test -Dgroups=performance
./mvnw clean test -Dgroups=endtoend
./mvnw versions:display-dependency-updates
./mvnw versions:display-plugin-updates
./mvnw dependency:tree -pl problems jwebserver -p 9000 -d "$(pwd)/docs/"Using the jmh-results.json you can review the performance results: