The following describes selected improvements of the Java language. See the Java 22 release notes. See Java Language Updates for Java SE 22.
With Java 22 the following language enhancements are now generally available
JEP 456 is releasing Unnamed Patterns and Variables. Unnamed patterns, which match a record component without stating the component’s name or type, and unnamed variables, which can be initialized but not used. Both are denoted by an underscore character, _.
The Java language mandates to declare variables (names) even when they are not needed (used). Often we also find ourselves to declare variables just for the sake of having a consistent look.
Unresolved directive in <stdin> - include::../../../../../../../../src/main/java/twentytwo/lang/UnnamedVariablesAndPatterns.java[tag=unnamedVariables]
| 100% successful |
| Package | Tests | Failures | Ignored | Duration | Success rate |
|---|---|---|---|---|---|
| eighteen.tooling | 2 | 0 | 0 | 0.028s | 100% |
| eleven.api | 6 | 0 | 0 | 0.026s | 100% |
| eleven.lang | 4 | 0 | 0 | 0.009s | 100% |
| fifteen.api | 1 | 0 | 0 | 0.009s | 100% |
| fifteen.lang | 1 | 0 | 0 | 0.003s | 100% |
| fourteen.api | 2 | 0 | 0 | 0.055s | 100% |
| fourteen.lang | 3 | 0 | 0 | 0.015s | 100% |
| nine.api | 28 | 0 | 0 | 0.066s | 100% |
| nine.lang | 4 | 0 | 0 | 0.004s | 100% |
| nineteen.api | 7 | 0 | 0 | 0.030s | 100% |
| sixteen.api | 2 | 0 | 0 | 0.018s | 100% |
| sixteen.lang | 4 | 0 | 0 | 0.013s | 100% |
| ten.api | 7 | 0 | 0 | 0.012s | 100% |
| ten.lang | 1 | 0 | 0 | 0.001s | 100% |
| thirteen.api | 1 | 0 | 0 | 0.085s | 100% |
| twelve.api | 5 | 0 | 0 | 0.059s | 100% |
| twentyfive.api | 6 | 0 | 0 | 0.059s | 100% |
| twentyfive.lang | 6 | 0 | 0 | 0.006s | 100% |
| twentyfour.api | 11 | 0 | 0 | 0.047s | 100% |
| twentyone.api | 3 | 0 | 0 | 1.181s | 100% |
| twentyone.lang | 2 | 0 | 0 | 0.005s | 100% |
| twentythree.tooling | 10 | 0 | 0 | 0.017s | 100% |
| twentytwo.lang | 3 | 0 | 0 | 0.004s | 100% |
Add the location of asciidoctor-revealjs to the PATH variable (export PATH=./:$PATH).
Export the following variables
Unresolved directive in <stdin> - include::.env[]
Run the following command
gw compileClasses && \
./.gitlab-ci.d/build-presentation.sh && \
./.gitlab-ci.d/publish-presentation.sh`