From 7b8688bdf3509c3bf1c9e2f053ce8ba4cf6a382f Mon Sep 17 00:00:00 2001 From: geekpi Date: Wed, 11 Aug 2021 08:52:43 +0800 Subject: [PATCH] translated --- ...807 How to Install Java on Fedora Linux.md | 102 ------------------ ...807 How to Install Java on Fedora Linux.md | 102 ++++++++++++++++++ 2 files changed, 102 insertions(+), 102 deletions(-) delete mode 100644 sources/tech/20210807 How to Install Java on Fedora Linux.md create mode 100644 translated/tech/20210807 How to Install Java on Fedora Linux.md diff --git a/sources/tech/20210807 How to Install Java on Fedora Linux.md b/sources/tech/20210807 How to Install Java on Fedora Linux.md deleted file mode 100644 index ada77446cc..0000000000 --- a/sources/tech/20210807 How to Install Java on Fedora Linux.md +++ /dev/null @@ -1,102 +0,0 @@ -[#]: subject: "How to Install Java on Fedora Linux" -[#]: via: "https://itsfoss.com/install-java-fedora/" -[#]: author: "Abhishek Prakash https://itsfoss.com/author/abhishek/" -[#]: collector: "lujun9972" -[#]: translator: "geekpi" -[#]: reviewer: " " -[#]: publisher: " " -[#]: url: " " - -How to Install Java on Fedora Linux -====== - -Love it or hate it, it is difficult to avoid Java. - -Java is still a very popular programming language taught in the schools and used in the enterprises. - -If you want to use a Java-based tool or program in Java, you’ll need to have Java on your system. - -This becomes confusing because there are so many technical terms around java. - - * Java Development Kit (JDK) for creating Java programs - * Java Runtime Environment (JRE) or Java Virtual Machine (JVM) for running Java programs - - - -On top of that, you’ll come across [OpenJDK][1] and [Oracle Java SE][2]. OpenJDK is what is recommended because it is open source. If you have exclusive need then only you should go for Oracle Java SE. - -There is one more thing here. Even OpenJDK has several versions available. At the time of writing this article, Fedora 34 has OpenJDK 1.8, OpenJDK 11 and OpenJDK 16 available. - -It is up to you to decide which Java version you want. - -### Installing Java on Fedora Linux - -First thing first, check if Java is already installed and which version it is. I am not kidding. Fedora usually comes with Java preinstalled. - -To check, use the following command: - -``` -java -version -``` - -As you can see in the screenshot below, I have Java 11 (OpenJDK 11) installed on my Fedora system. - -![Check Java version][3] - -Let’s say you want to install another version of Java. You may check the available options with the following command: - -``` -sudo dnf search openjdk -``` - -The sudo here is not required but it will refresh the metadata for sudo user which will eventually help when you install another version of Java. - -The above command will show a huge output with plenty of similar looking packages. You have to focus on the initial few words to understand the different versions available. - -![Available Java versions in Fedora][4] - -For example, to install Java 8 (OpenJDK 1.8), the package name should be java-1.8.0-openjdk.x86_64 or java-1.8.0-openjdk. Use it to install it: - -``` -sudo dnf install java-1.8.0-openjdk.x86_64 -``` - -![Install Java Fedora][5] - -That’s good. Now you have both Java 11 and Java 8 installed on your system. But how will you use one of them? - -#### Switch Java version on Fedora - -Your Java version in use remains the same unless you explicitly change it. Use this command to list the installed Java versions on your system: - -``` -sudo alternatives --config java -``` - -You’ll notice a number before the Java versions. The + sign before the Java versions indicate the current Java version in use. - -You can specify the number to switch the Java version. So, in the example below, if I enter 2, it will change the Java version on the system from Java 11 to Java 8. - -![Switching between installed Java versions][6] - -That’s all you need to do for installing Java on Fedora. - --------------------------------------------------------------------------------- - -via: https://itsfoss.com/install-java-fedora/ - -作者：[Abhishek Prakash][a] -选题：[lujun9972][b] -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://itsfoss.com/author/abhishek/ -[b]: https://github.com/lujun9972 -[1]: https://openjdk.java.net/ -[2]: https://www.oracle.com/java/technologies/javase-downloads.html -[3]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2021/08/check-java-version-fedora.png?resize=800%2C271&ssl=1 -[4]: https://itsfoss.com/wp-content/uploads/2021/08/available-java-versions-fedora-800x366.webp -[5]: https://i0.wp.com/itsfoss.com/wp-content/uploads/2021/08/install-java-fedora.png?resize=800%2C366&ssl=1 -[6]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2021/08/switch-java-versions-fedora.png?resize=800%2C513&ssl=1 diff --git a/translated/tech/20210807 How to Install Java on Fedora Linux.md b/translated/tech/20210807 How to Install Java on Fedora Linux.md new file mode 100644 index 0000000000..fad8fe25e2 --- /dev/null +++ b/translated/tech/20210807 How to Install Java on Fedora Linux.md @@ -0,0 +1,102 @@ +[#]: subject: "How to Install Java on Fedora Linux" +[#]: via: "https://itsfoss.com/install-java-fedora/" +[#]: author: "Abhishek Prakash https://itsfoss.com/author/abhishek/" +[#]: collector: "lujun9972" +[#]: translator: "geekpi" +[#]: reviewer: " " +[#]: publisher: " " +[#]: url: " " + +如何在 Fedora Linux 上安装 Java +====== + +不管是爱它还是恨它，都很难避开 Java。 + +Java 仍然是一种非常流行的编程语言，在学校里教，在企业里用。 + +如果你想使用基于 Java 的工具或用 Java 编程，你就需要在你的系统上安装 Java。 + +这就变得很混乱，因为围绕着 Java 有很多技术术语。 + + * Java 开发工具包（JDK）用于创建 Java 程序 + * Java 运行环境（JRE）或 Java 虚拟机（JVM），用于运行 Java 程序。 + + + +除此之外，你还会遇到 [OpenJDK][1] 和 [Oracle Java SE][2]。OpenJDK 是被推荐的，因为它是开源的。如果你有专门的需求，那么你只应该选择 Oracle Java SE。 + +这里还有一件事。即使是 OpenJDK 也有几个版本可供选择。在写这篇文章的时候，Fedora 34 有 OpenJDK 1.8、OpenJDK 11 和 OpenJDK 16 可用。 + +你可以自行决定想要哪个Java版本。 + +### 在 Fedora Linux 上安装 Java + +首先，检查是否已经安装了 Java，以及它是哪个版本。我不是在开玩笑。Fedora 通常预装了 Java。 + +要检查它，请使用以下命令： + +``` +java -version +``` + +正如你在下面的截图中看到的，我的 Fedora 系统上安装了 Java 11（OpenJDK 11）。 + +![Check Java version][3] + +假设你想安装另一个版本的 Java。你可以用下面的命令检查可用的选项： + +``` +sudo dnf search openjdk +``` + +这里的sudo不是必须的，但它会刷新 sudo 用户的元数据，这在你安装另一个版本的 Java 时会有帮助。 + +上面的命令将显示很多输出，其中有很多看起来相似的软件包。你必须专注于最初的几个词来理解不同的版本。 + +![Available Java versions in Fedora][4] + +例如，要安装 Java 8 (OpenJDK 1.8)，包的名字应该是 java-1.8.0-openjdk.x86_64 或者 java-1.8.0-openjdk。用它来安装： + +``` +sudo dnf install java-1.8.0-openjdk.x86_64 +``` + +![Install Java Fedora][5] + +这就好了。现在你的系统上同时安装了 Java 11 和 Java 8。但你将如何使用其中一个呢？ + +#### 在 Fedora 上切换 Java 版本 + +你正在使用的 Java 版本保持不变，除非你明确改变它。使用这个命令来列出系统上安装的 Java 版本： + +``` +sudo alternatives --config java +``` + +你会注意到在 Java 版本前有一个数字。Java 版本前的 + 号表示当前正在使用的 Java 版本。 + +你可以指定这个数字来切换 Java 版本。因此，在下面的例子中，如果我输入 2，它将把系统中的 Java 版本从 Java 11 改为 Java 8。 + +![Switching between installed Java versions][6] + +这就是你在 Fedora 上安装 Java 所需要做的一切。 + +-------------------------------------------------------------------------------- + +via: https://itsfoss.com/install-java-fedora/ + +作者：[Abhishek Prakash][a] +选题：[lujun9972][b] +译者：[geekpi](https://github.com/geekpi) +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://itsfoss.com/author/abhishek/ +[b]: https://github.com/lujun9972 +[1]: https://openjdk.java.net/ +[2]: https://www.oracle.com/java/technologies/javase-downloads.html +[3]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2021/08/check-java-version-fedora.png?resize=800%2C271&ssl=1 +[4]: https://itsfoss.com/wp-content/uploads/2021/08/available-java-versions-fedora-800x366.webp +[5]: https://i0.wp.com/itsfoss.com/wp-content/uploads/2021/08/install-java-fedora.png?resize=800%2C366&ssl=1 +[6]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2021/08/switch-java-versions-fedora.png?resize=800%2C513&ssl=1