Expo Go makes this possible by including a feature-rich native runtime made up of every module in the Expo SDK, so all you need to do to use a module is install the package with npx expo install and reload your app. The Expo Go app is a great tool to get started - it exists to help developers quickly get projects off the ground, to experiment with ideas (such as on Snack) and share their work with minimal friction. Once you've set these up, you can launch your app on an Android Virtual Device by running npm run android, or on the iOS Simulator by running npm run ios (macOS only). If you want to run your app on the iOS Simulator or an Android Virtual Device, please refer to the instructions for "React Native CLI Quickstart" to learn how to install Xcode or set up your Android development environment. Running your app on a simulator or virtual deviceĮxpo Go allows you to run your React Native app on a physical device without installing iOS and Android native SDKs. If you're curious to learn more about React Native, check out the Introduction to React Native. If you have a problem with Expo, before creating a new issue, please see if there's an existing issue about it in the Expo issues. You can also ask for help on the Expo Discord. Now what?Įxpo also has docs you can reference if you have questions specific to the tool. That's it!Ĭongratulations! You've successfully run and modified your first React Native app. The application should reload automatically once you save your changes. Open App.js in your text editor of choice and edit some lines. Now that you have successfully run the app, let's modify it. On iOS, use the built-in QR code scanner of the default iOS Camera app. On Android, use the Expo Go app to scan the QR code from your terminal to open your project. Install the Expo Go app on your iOS or Android phone and connect to the same wireless network as your computer. This story, "Installing Oracle Java SE 11 on Ubuntu 18.This will start a development server for you. Sudo apt-get remove oracle-java11-set-default-localĪs as an Ubuntu user, recall that you may go to Software & Updates -> Other Software to remove the PPA repository. If for any reason you wish to uninstall Oracle JDK 11, simply run the following command: A version check confirms JDK 11 is successfully installed on Ubuntu Linux How to uninstall JDK 11 You should see something like this: Kibo Hutchinsonįigure 1. Use the java -version to check the current version. If you have installed multiple versions and want to remove earlier ones, start by entering remove oracle-java11-set-default package, then set Java 11 as the new default: sudo apt-get install oracle-java11-set-default-local. What if you've installed multiple versions? Tip: You've already added PPA, so you can skip sudo apt-get update command. Sudo apt-get install oracle-java11-installer-localĪccept the license by pressing Tab to highlight OK, then hit Enter. Next, you'll install the script that initiates downloading and installing Java 11 on Ubuntu: Run command: sudo add-apt-repository ppa:linuxuprising/java.Open the Ubuntu terminal, either from app launcher or by pressing Clt + Alt + T.Step 2: Install Oracle JDK 11 in Ubuntu 18.04/18.10 Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.5+10-LTS, mixed mode) Java(TM) SE Runtime Environment 18.9 (build 11.0.5+10-LTS) If your install was succesful, you'll see something like java -version Lastly, always check whether the installation has been successful: Sudo apt install oracle-java11-installer-local Sudo add-apt-repository ppa:linuxuprising/javaĭoing this ensures the package cache will be automatically refreshed. Next, you will add PPA (Personal Package Archive) to Ubuntu apt: Tip: You may also want to create a folder in /var/cache/oracle-jdk11-installer-local/. Sudo cp jdk-11.0.5_linux-圆4_ /var/cache/oracle-jdk11-installer-local/ Sudo mkdir -p /var/cache/oracle-jdk11-installer-local/ Now create a folder and copy the Oracle JDK 11 from downloads: Next, make sure the checksum of the binary matches: The first thing you need to do is update the system, using the following command: Note that this tip assumes you have already installed Ubuntu 18.04 or 18.10. The combination of features, updates, and support makes this version ideal for new development, as well as for migrating your Java 8 code-base to a newer platform. Oracle has committed to Java SE 11 until 2026. You can still use these versions, but they are not being actively updated or supported.įor developers looking for the ideal mix of current features and long-term support, JDK 11 is a good bet. The much-loved Java 8 is already in the dustbin, as far as Oracle is concerned, and so are Java 9 and Java 10. Fewer Java releases are slated for long-term support, so it’s important to pay attention.
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