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Merge pull request #308 from graalvm/ni-demos-refactoring-5
[GR-60094] Add a demo for Include Resources in a Native Executable guide.
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‎.github/workflows/native-image-include-resources.yml

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name: native-image/include-resources
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on:
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push:
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paths:
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- 'native-image/include-resources/**'
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- '.github/workflows/native-image-include-resources.yml'
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pull_request:
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paths:
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- 'native-image/include-resources/**'
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- '.github/workflows/native-image-include-resources.yml'
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schedule:
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- cron: "0 0 1 * *" # run every month
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workflow_dispatch:
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permissions:
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contents: read
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jobs:
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run:
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name: Run 'native-image/include-resources'
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runs-on: ubuntu-latest
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timeout-minutes: 15
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strategy:
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matrix:
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java-version: ['21', '24-ea']
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steps:
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- uses: actions/checkout@v4
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- uses: graalvm/setup-graalvm@v1
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with:
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java-version: ${{ matrix.java-version }}
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distribution: 'graalvm'
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github-token: ${{ secrets.GITHUB_TOKEN }}
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cache: 'maven'
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native-image-job-reports: 'true'
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- name: Run 'native-image/include-resources'
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run: |
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cd native-image/include-resources
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javac Fortune.java
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native-image -Ob -H:IncludeResources=".*u8$" Fortune
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./fortune

‎native-image/include-resources/.gitignore

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.class
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fortune

‎native-image/include-resources/Fortune.java

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/*
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* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* The Universal Permissive License (UPL), Version 1.0
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*
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* Subject to the condition set forth below, permission is hereby granted to any
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* person obtaining a copy of this software, associated documentation and/or
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* data (collectively the "Software"), free of charge and under any and all
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* copyright rights in the Software, and any and all patent rights owned or
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* freely licensable by each licensor hereunder covering either (i) the
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* unmodified Software as contributed to or provided by such licensor, or (ii)
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* the Larger Works (as defined below), to deal in both
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*
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* (a) the Software, and
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*
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* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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* one is included with the Software each a "Larger Work" to which the Software
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* is contributed by such licensors),
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*
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* without restriction, including without limitation the rights to copy, create
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* derivative works of, display, perform, and distribute the Software and make,
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* use, sell, offer for sale, import, export, have made, and have sold the
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* Software and the Larger Work(s), and to sublicense the foregoing rights on
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* either these or other terms.
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*
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* This license is subject to the following condition:
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*
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* The above copyright notice and either this complete permission notice or at a
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* minimum a reference to the UPL must be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.util.ArrayList;
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import java.util.Random;
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import java.util.Scanner;
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public class Fortune {
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private static final String SEPARATOR = "%";
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private static final Random RANDOM = new Random();
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private ArrayList<String> fortunes = new ArrayList<>();
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public Fortune(String path) {
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// Scan the file into the array of fortunes
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Scanner s = new Scanner(new BufferedReader(new InputStreamReader(this.getClass().getResourceAsStream(path))));
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s.useDelimiter(SEPARATOR);
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while (s.hasNext()) {
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fortunes.add(s.next());
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}
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}
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private void printRandomFortune() throws InterruptedException {
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int r = RANDOM.nextInt(fortunes.size()); // Pick a random number
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String f = fortunes.get(r); // Use the random number to pick a random fortune
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for (char c: f.toCharArray()) { // Print out the fortune
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System.out.print(c);
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Thread.sleep(100);
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}
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}
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public static void main(String[] args) throws InterruptedException {
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Fortune fortune = new Fortune("/fortunes.u8");
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fortune.printRandomFortune();
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}
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}

‎native-image/include-resources/META-INF/native-image/reachability-metadata.json

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{
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"resources": [
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{
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"glob": "fortunes.u8"
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}
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]
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}

‎native-image/include-resources/README.md

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# Include Resources in a Native Executable
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You can find the steps to run this demo on [the website](https://www.graalvm.org/latest/reference-manual/native-image/guides/include-resources/).

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