<!doctype html><html lang="en"><head><meta charset="utf-8"><meta http-equiv="CACHE-CONTROL" content="NO-CACHE"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>Creating a Hello World in Apache Royale</title><link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css"><link rel="stylesheet" href="/css/styles.css"><link rel="shortcut icon" href="/img/favicon.ico"></head><body class="page post" id="main"><header class="docs-header"><div class="container"><div class="topbar"><div class="topbar-left"><a href="/"><span class="site-title">Apache Royale</span></a></div><div class="topbar-center"></div><div class="topbar-right"><button class="topMenu-dropbtn"><i class="fa fa-bars"></i>&nbsp;Menu</button><ul class="topMenu"><li><a href="/features">Features</a></li><li><a href="https://apache.github.io/royale-docs/get-started">Get Started</a></li><li><a href="/download">Download</a></li><li><a href="/docs">Docs</a></li><li><a href="/blog">Blog</a></li><li><a href="https://github.com/apache/royale-asjs/wiki/Apache-Royale-Source-Code-Repositories"><i class="fa fa-github"></i> GitHub</a></li></ul></div></div><div class="post-header"><h1>Creating a Hello World in Apache Royale</h1><div class="post-meta">by Carlos Rovira on February 12, 2018</div></div></div></header><div class="page-content"><div class="container"><article><p>This section will try to bring simple code examples that should help to develop with Apache Royale more quickly. This is in part a tribute to Peter deHaan blogs he did for <a href="http://blog.flexexamples.com/">Apache Flex</a>, <a href="http://actionscriptexamples.com/">ActionScript 3</a> and <a href="http://airexamples.com/">Adobe AIR</a> some years ago. Hope you like it and want to contribute to get a huge library of Royale code snippets well organized and searchable.</p><p>So lets begin with our first code snippet: Hello World.</p><pre><code class="language-mxml">&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
&lt;js:Application xmlns:fx=&quot;http://ns.adobe.com/mxml/2009&quot;
            xmlns:js=&quot;library://ns.apache.org/royale/basic&quot;&gt;

    &lt;js:valuesImpl&gt;
        &lt;js:SimpleCSSValuesImpl /&gt;
    &lt;/js:valuesImpl&gt;

    &lt;js:initialView&gt;
        &lt;js:View&gt;
            &lt;js:Label text=&quot;Hello World&quot; /&gt;
        &lt;/js:View&gt;
    &lt;/js:initialView&gt;
&lt;/js:Application&gt;
</code></pre><p>In this example you can see the use of the following MXML tags:</p><ul><li><strong>Application</strong>: Is the main tag in your application. All content in Apache Royale is added inside this tag.</li><li><strong>SimpleCSSValuesImpl</strong>: This class implements a minimal set of CSS rules that is sufficient for most applications.</li><li><strong>View</strong>: This is the class for most views in a Royale application.</li><li><strong>Label</strong>: Implements the basic control for show a label with text.</li></ul><h2>Where to go from here</h2><ul><li><a href="https://apache.github.io/royale-docs/get-started">Apache Royale documentation &quot;Get Started&quot; page</a></li><li><a href="https://apache.github.io/royale-docs/get-started/hello-world">Apache Royale documentation &quot;Hello World&quot; page</a></li></ul><p>The result of this &quot;Hello World&quot; code snippet is the following:</p><iframe width="100%" height="300" src="/blog-examples/BE0001_Hello_World/index.html"></iframe><p>(We're using an iframe to host the actual results of this example compilation. To see the example in a separate window click <a href="/blog-examples/BE0001_Hello_World/index.html" target="_blank">this link</a>.)</p><p>Full project with source code can be found <a href="https://github.com/apache/royale-asjs/tree/develop/examples/blog/BE0001_Hello_World">here</a>:</p><p><a class="btn btn-download" href="https://github.com/apache/royale-asjs/tree/develop/examples/blog/BE0001_Hello_World"><i class="fa fa-download"></i> Project Source Code</a></p></article></div></div><footer class="footer"><div class="footer-row"><div class="footer-column"><ul class="footer-list"><li class="apacheroyale"><a href="/">Apache Royale</a></li><li><a href="/">Home</a></li><li><a href="/features">Features</a></li><li><a href="/download">Download</a></li><li><a href="/ides">IDEs and Editors</a></li><li><a href="/showcase">Showcase</a></li><li><a href="/blog">Blog</a></li><li><a href="/team">Team</a></li><li><a href="/thanks-to">Thanks To</a></li><li><a href="https://apache.org/logos/#royale"><i class="fa fa-external-link-square"></i> Logos</a></li><li><a href="https://www.apache.org/licenses/"><i class="fa fa-external-link-square"></i> Apache License v2.0</a></li></ul></div><div class="footer-column"><ul class="footer-list"><li class="documentation"><a href="/docs">Documentation</a></li><li><a href="https://apache.github.io/royale-docs/get-started">Get Started</a></li><li><a href="/docs">Docs</a></li><li><a href="/asdoc">API Reference</a></li><li><a href="https://github.com/apache/royale-asjs/wiki"><i class="fa fa-github"></i>Wiki</a></li><li><a href="https://stackoverflow.com/questions/tagged/apache-royale"><i class="fa fa-stack-overflow"></i> StackOverFlow Tag</a></li></ul><ul class="footer-list"><li class="community"><a href="/get-involved">Community</a></li><li><a href="/get-involved">Get Involved</a></li><li><a href="/mailing-lists">Mailing Lists</a></li><li><a href="/faq">FAQ</a></li></ul><ul class="footer-list"><li class="development"><a href="/source-code">Development</a></li><li><a href="https://github.com/apache/royale-asjs/wiki/Apache-Royale-Source-Code-Repositories"><i class="fa fa-github"></i> Github</a></li><li><a href="https://github.com/apache/royale-asjs/issues"><i class="fa fa-github"></i> Issues</a></li><li><a href="/source-code"><i class="fa fa-code"></i> Source Code</a></li></ul></div><div class="footer-column"><ul class="footer-list"><li class="social_t">Social</li><li><a href="https://twitter.com/apacheroyale"><i class="fa fa-twitter"></i> Twitter</a></li><li><a href="https://facebook.com/ApacheRoyaleSDK/"><i class="fa fa-facebook"></i> Facebook</a></li><li><a href="https://www.linkedin.com/groups/12118437"><i class="fa fa-linkedin"></i> LinkedIn</a></li><li><a href="/feed/index.xml"><i class="fa fa-rss"></i> RSS</a></li></ul><ul class="footer-list"><li class="apache"><a href="https://www.apache.org/">Apache</a></li><li><a href="https://www.apache.org/"><i class="fa fa-external-link-square"></i> Apache</a></li><li><a href="https://www.apache.org/foundation/contributing.html"><i class="fa fa-external-link-square"></i> Donations</a></li><li><a href="https://www.apache.org/events/current-event"><i class="fa fa-external-link-square"></i> Events</a></li><li><a href="https://www.apache.org/foundation/sponsorship.html"><i class="fa fa-external-link-square"></i> Sponsorship</a></li><li><a href="https://www.apache.org/foundation/thanks.html"><i class="fa fa-external-link-square"></i> Thanks</a></li><li><a href="https://www.apache.org/security/"><i class="fa fa-external-link-square"></i>Security</a></li></ul></div><div class="aboutusdiv"><p class="aboutus">About Us</p><p class="aboutus_p"><img class="aboutus-logo" src="/img/apache-royale-logo-footer-circle-grey.svg"><a href="/" class="aboutus_a">Apache Royale™</a> is a highly productive open source application technology for building expressive frontend applications that outputs to different formats and deploy consistently on all major browsers, desktops and devices.</p><p><img class="aboutus-apache-logo" src="/img/Apache_PoweredBy.svg"> <a href="/" class="aboutus_a">Apache Royale™</a>, <a href="https://www.apache.org" class="aboutus_a">Apache™</a> and the <a href="https://www.apache.org/foundation/press/kit/" class="aboutus_a">Apache feather logo™</a> are trademarks of The Apache Software Foundation. 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