build(workflows): run with java 18 #26

	name: Build
	on:
	pull_request:
	push:
	branches:
	- master
	- devel

	jobs:

	validation:
	name: "Gradle Wrapper Validation"
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: gradle/wrapper-validation-action@v1

	build:
	needs: validation
	runs-on: ubuntu-latest

	strategy:
	matrix:
	java-version: [ 17, 18 ]

	steps:
	- name: Checkout Code
	uses: actions/checkout@v3

	- name: Setup JDK
	uses: actions/setup-java@v3
	with:
	distribution: 'adopt'
	java-version: ${{ matrix.java-version }}

	- name: Print Java Version
	run: java --version

	- name: Setup Gradle
	uses: gradle/gradle-build-action@v2

	- name: Lint Gradle File
	run: ./gradlew autoLintGradle

	- name: Build project
	run: ./gradlew build -x test

	- name: Unit Test
	run: ./gradlew test

	- name: Integration Test
	run: ./gradlew integrationTest

	- name: Publish Candidate
	if: \|
	startsWith(github.ref, 'refs/tags/v') &&
	contains(github.ref, '-rc.')
	run: ./gradlew --info --stacktrace -Prelease.useLastTag=true candidate

	- name: Upload Artifacts
	uses: actions/upload-artifact@v3
	if: \|
	startsWith(github.ref, 'refs/tags/v')
	with:
	name: Package
	path: ./*/build/libs/.jar

	- name: Cleanup Gradle Cache
	# Remove some files from the Gradle cache, so they aren't cached by GitHub Actions.
	# Restoring these files from a GitHub Actions cache might cause problems for future builds.
	run: \|
	rm -f ~/.gradle/caches/modules-2/modules-2.lock
	rm -f ~/.gradle/caches/modules-2/gc.properties

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