Adds module-info and upgrades source code to java 8 #2

	name: Check java class version
	on:
	push:
	branches:
	- "*"
	pull_request:
	types: [opened, synchronize, reopened]
	jobs:
	build:
	name: Build and check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0 # Shallow clones should be disabled for a better relevancy of analysis
	- name: Set up JDK 17
	uses: actions/setup-java@v4
	with:
	java-version: 17
	distribution: 'zulu' # Alternative distribution options are available.
	- name: Cache Maven packages
	uses: actions/cache@v4
	with:
	path: ~/.m2
	key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
	restore-keys: ${{ runner.os }}-m2
	- name: Build and check
	run: \|
	mvn -P sonar package
	cd java8Test
	mvn package

	echo "checking ../javaluator-demo/target/javaluator-demo.jar"
	java -jar target/javaReleaseTest.jar ../javaluator-demo/target/javaluator-demo.jar 52

	# Let check the library itself in case demo pom points to an older release of the library
	OUT="$(ls ../javaluator/target/javaluator*.jar \| grep -v javadoc.jar \| grep -v sources.jar)"
	echo "checking $OUT"
	java -jar target/javaReleaseTest.jar $OUT 52

	OUT="$(ls ../javaluator-examples/target/javaluator-examples*.jar \| grep -v javadoc.jar \| grep -v sources.jar)"
	echo "checking $OUT"
	java -jar target/javaReleaseTest.jar $OUT 52

Provide feedback