如何在Windows上安装OpenJDK 11? [英] How to install OpenJDK 11 on Windows?

问题描述

过去，Oracle曾为Windows发布可执行的安装程序，该程序将:

In the past, Oracle used to publish an executable installers for Windows that would:

• 解压缩文件
• 添加注册表项以指示安装的版本和路径
• 将JRE添加到系统PATH
• 在Windows中注册卸载程序.

从Java 11开始，Oracle的Java免费版本( Oracle OpenJDK )似乎没有包括安装程序.这只是一个包含二进制文件的zip文件.

As of Java 11, the Oracle's free version of Java (Oracle OpenJDK) doesn't seem to include an installer. It is just a zip file containing the binaries.

鉴于前面提到的集成不再存在，我们应该如何在Windows上安装OpenJDK 11?他们不是必要的吗?

How are we supposed to install OpenJDK 11 on Windows seeing as the aforementioned integrations are no longer there? Aren't they necessary?

推荐答案

1. 将zip文件提取到一个文件夹中，例如C:\Program Files\Java\，它将创建一个jdk-11文件夹(其中bin文件夹是直接子文件夹).您可能需要管理员权限才能将zip文件解压缩到该位置.

1. Extract the zip file into a folder, e.g. C:\Program Files\Java\ and it will create a jdk-11 folder (where the bin folder is a direct sub-folder). You may need Administrator privileges to extract the zip file to this location.

设置路径:

• 选择控制面板，然后选择系统.
• 点击高级"，然后点击环境变量".
• 将JDK安装的bin文件夹的位置添加到系统变量"中的PATH变量中.
• 以下是PATH变量的典型值:C:\WINDOWS\system32;C:\WINDOWS;"C:\Program Files\Java\jdk-11\bin"

• Select Control Panel and then System.
• Click Advanced and then Environment Variables.
• Add the location of the bin folder of the JDK installation to the PATH variable in System Variables.
• The following is a typical value for the PATH variable: C:\WINDOWS\system32;C:\WINDOWS;"C:\Program Files\Java\jdk-11\bin"

设置JAVA_HOME:

Set JAVA_HOME:

• 在系统变量"下，单击新建".
• 输入变量名称JAVA_HOME.
• 输入变量值作为JDK的安装路径(不包含bin子文件夹).
• 单击确定".
• 点击应用更改".

• Under System Variables, click New.
• Enter the variable name as JAVA_HOME.
• Enter the variable value as the installation path of the JDK (without the bin sub-folder).
• Click OK.
• Click Apply Changes.

您已设置好.

要查看它是否有效，请打开命令提示符，然后键入java -version并查看它是否会打印新安装的JDK.

To see if it worked, open up the Command Prompt and type java -version and see if it prints your newly installed JDK.

如果要卸载-只需撤消上述步骤即可.

If you want to uninstall - just undo the above steps.

注意:您还可以将JAVA_HOME指向JDK安装目录，然后将PATH变量设置为%JAVA_HOME%\bin.因此，当您想更改JDK时，只需更改JAVA_HOME变量，并保留PATH不变.

Note: You can also point JAVA_HOME to the folder of your JDK installations and then set the PATH variable to %JAVA_HOME%\bin. So when you want to change the JDK you change only the JAVA_HOME variable and leave PATH as it is.

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