选题: How to start developing on Java in Fedora

sources/tech/20180420 How to start developing on Java in Fedora.md

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+How to start developing on Java in Fedora
+======
+
+![](https://fedoramagazine.org/wp-content/uploads/2018/04/java-getting-started-816x345.jpg)
+Java is one of the most popular programming languages in the world. It is widely-used to develop IOT appliances, Android apps, web, and enterprise applications. This article will provide a quick guide to install and configure your workstation using [OpenJDK][1].
+
+### Installing the compiler and tools
+
+Installing the compiler, or Java Development Kit (JDK), is easy to do in Fedora. At the time of this article, versions 8 and 9 are available. Simply open a terminal and enter:
+```
+sudo dnf install java-1.8.0-openjdk-devel
+
+```
+
+This will install the JDK for version 8. For version 9, enter:
+```
+sudo dnf install java-9-openjdk-devel
+
+```
+
+For the developer who requires additional tools and libraries such as Ant and Maven, the **Java Development** group is available. To install the suite, enter:
+```
+sudo dnf group install "Java Development"
+
+```
+
+To verify the compiler is installed, run:
+```
+javac -version
+
+```
+
+The output shows the compiler version and looks like this:
+```
+javac 1.8.0_162
+
+```
+
+### Compiling applications
+
+You can use any basic text editor such as nano, vim, or gedit to write applications. This example provides a simple “Hello Fedora” program.
+
+Open your favorite text editor and enter the following:
+```
+public class HelloFedora {
+
+
+      public static void main (String[] args) {
+              System.out.println("Hello Fedora!");
+      }
+}
+
+```
+
+Save the file as HelloFedora.java. In the terminal change to the directory containing the file and do:
+```
+javac HelloFedora.java
+
+```
+
+The compiler will complain if it runs into any syntax errors. Otherwise it will simply display the shell prompt beneath.
+
+You should now have a file called HelloFedora, which is the compiled program. Run it with the following command:
+```
+java HelloFedora
+
+```
+
+And the output will display:
+```
+Hello Fedora!
+
+```
+
+### Installing an Integrated Development Environment (IDE)
+
+Some programs may be more complex and an IDE can make things flow smoothly. There are quite a few IDEs available for Java programmers including:
+
++ Geany, a basic IDE that loads quickly, and provides built-in templates
++ Anjuta
++ GNOME Builder, which has been covered in the article Builder – a new IDE specifically for GNOME app developers
+
+However, one of the most popular open-source IDE’s, mainly written in Java, is [Eclipse][2]. Eclipse is available in the official repositories. To install it, run this command:
+```
+sudo dnf install eclipse-jdt
+
+```
+
+When the installation is complete, a shortcut for Eclipse appears in the desktop menu.
+
+For more information on how to use Eclipse, consult the [User Guide][3] available on their website.
+
+### Browser plugin
+
+If you’re developing web applets and need a plugin for your browser, [IcedTea-Web][4] is available. Like OpenJDK, it is open source and easy to install in Fedora. Run this command:
+```
+sudo dnf install icedtea-web
+
+```
+
+As of Firefox 52, the web plugin no longer works. For details visit the Mozilla support site at [https://support.mozilla.org/en-US/kb/npapi-plugins?as=u&utm_source=inproduct][5].
+
+Congratulations, your Java development environment is ready to use.
+
+
+--------------------------------------------------------------------------------
+
+via: https://fedoramagazine.org/start-developing-java-fedora/
+
+作者：[Shaun Assam][a]
+选题：[lujun9972](https://github.com/lujun9972)
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]:https://fedoramagazine.org/author/sassam/
+[1]:http://openjdk.java.net/
+[2]:https://www.eclipse.org/
+[3]:http://help.eclipse.org/oxygen/nav/0
+[4]:https://icedtea.classpath.org/wiki/IcedTea-Web
+[5]:https://support.mozilla.org/en-US/kb/npapi-plugins?as=u&utm_source=inproduct