确定 Mac 上 Java SDK 的版本
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Determining the version of Java SDK on the Mac
提问by Ali_IT
I have a MacBook Pro running Snow Leopard; how can I see what version of the Java SDK is installed on my Mac?
我有一台运行 Snow Leopard 的 MacBook Pro；如何查看我的 Mac 上安装了哪个版本的 Java SDK？
采纳答案by Stefan Schmidt
In /System/Library/Frameworks/JavaVM.framework/Versionsyou'll see all the installed JDKs. There is a symbolic link named CurrentJDKpointing the active JDK.
在/System/Library/Frameworks/JavaVM.framework/Versions您将看到所有已安装的JDK。有一个名为CurrentJDK指向活动 JDK的符号链接。
回答by mipadi
Which SDKs? If you mean the SDK for Cocoa development, you can check in /Developer/SDKs/to see which ones you have installed.
哪些 SDK？如果您指的是 Cocoa 开发的 SDK，您可以查看/Developer/SDKs/您安装了哪些SDK 。
If you're looking for the JavaSDK version, then open up /Applications/Utilities/Java Preferences. The versions of Java that you have installed are listed there.
如果您正在寻找JavaSDK 版本，请打开/Applications/Utilities/Java Preferences. 您已安装的 Java 版本在此处列出。
On Mac OS X 10.6, though, the only Java version is 1.6.
但是，在 Mac OS X 10.6 上，唯一的 Java 版本是 1.6。
回答by Jesper
Open a terminal and type: java -version, or javac -version.
打开终端并输入：java -version, 或javac -version。
If you have all the latest updates for Snow Leopard, you should be running JDK 1.6.0_20 at this moment (the same as Oracle's current JDK version).
如果您拥有 Snow Leopard 的所有最新更新，那么此时您应该运行 JDK 1.6.0_20（与 Oracle 当前的 JDK 版本相同）。
回答by Rae
The simplest solution would be open terminal
最简单的解决方案是打开终端
$ java -version
it shows the following
它显示以下内容
java version "1.6.0_65"
- Stefan's solution also works for me. Here's the exact input:
- Stefan 的解决方案也适用于我。这是确切的输入：
$ cd /System/Library/Frameworks/JavaVM.framework/Versions
$ cd /System/Library/Frameworks/JavaVM.framework/Versions
$ ls -l
$ ls -l
Below is the last line of output:
下面是最后一行输出：
lrwxr-xr-x 1 root wheel 59 Feb 12 14:57 CurrentJDK -> /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents
1.6.0.jdk would be the answer
1.6.0.jdk 将是答案
回答by Jose Leonardo Rosero
Run this command in your terminal:
在终端中运行此命令：
$ java -version
java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
Cristians-MacBook-Air:~ fa$
回答by Tim Keating
On modern macOS, the correct path is /Library/Java/JavaVirtualMachines.
在现代 macOS 上，正确的路径是/Library/Java/JavaVirtualMachines.
You can also avail yourself of the command /usr/libexec/java_home, which will scan that directory for you and return a list.
您也可以使用该命令/usr/libexec/java_home，它会为您扫描该目录并返回一个列表。
