0 - also indicates no modification date is available #238

	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	name: Validate code

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	env:
	LC_ALL: en_US.UTF-8

	jobs:
	JDKxx_Matrix:
	strategy:
	fail-fast: true
	matrix:
	java: [ 21 ]
	os: [ ubuntu-latest ]
	name: JDK${{ matrix.java }} ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	steps:
	- name: Git Checkout
	uses: actions/checkout@v4
	- name: Set up Java
	uses: actions/setup-java@v4
	with:
	java-version: ${{ matrix.java }}
	distribution: zulu
	- name: Build
	run: \|
	ant -noinput validate
	env:
	ANT_OPTS: -Dexecute.validate=true

	continue-on-error:
	false

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