Define code style for spark and java and add code format check to CI #37

	name: GraphAr Java CI

	on:
	# Trigger the workflow on push or pull request,
	# but only for the main branch
	push:
	branches:
	- main
	paths:
	- 'cpp/include/**'
	- 'java/**'
	- '.github/workflows/java.yml'
	pull_request:
	branches:
	- main
	paths:
	- 'cpp/include/**'
	- 'java/**'
	- '.github/workflows/java.yml'

	concurrency:
	group: ${{ github.repository }}-${{ github.event.number \|\| github.head_ref \|\| github.sha }}-${{ github.workflow }}
	cancel-in-progress: true

	jobs:
	GraphAr-java:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	submodules: true

	- name: Install dependencies
	run: \|
	# install the latest arrow deb to test arrow
	wget -c https://apache.jfrog.io/artifactory/arrow/"$(lsb_release --id --short \| tr 'A-Z' 'a-z')"/apache-arrow-apt-source-latest-$(lsb_release --codename --short).deb \
	-P /tmp/
	sudo apt-get install -y /tmp/apache-arrow-apt-source-latest-"$(lsb_release --codename --short)".deb
	sudo apt-get update -y
	sudo apt install -y libarrow-dev libarrow-dataset-dev libarrow-acero-dev libparquet-dev
	sudo apt-get install libcurl4-openssl-dev -y
	sudo apt-get install llvm-11 clang-11 lld-11 libclang-11-dev libz-dev -y

	- name: Code Format Check
	run: \|
	export JAVA_HOME=${JAVA_HOME_11_X64}
	pushd java
	mvn spotless:check
	popd

	- name: Build and Install cpp
	run: \|
	mkdir build
	pushd build
	cmake ../cpp
	make -j$(nproc)
	sudo make install
	popd

	- name: Run test
	run: \|
	export JAVA_HOME=${JAVA_HOME_11_X64}
	export LLVM11_HOME=/usr/lib/llvm-11
	pushd java
	mvn test -Dspotless.check.skip=true
	popd

Provide feedback