Mac OS X 10.8 Mountain Lion上安装了Oracle（Sun）的JDK / JRE在哪里？

Question

Oracle（Sun）在Mac OS X 10.8 Mountain Lion上安装JDK / JRE的位置是什么？

Answer 1

/Library/Java/JavaVirtualMachines/根据Mac JDK卸载文档 。

Answer 2

The Oracle Java SE downloads at: http://www.oracle.com/technetwork/java/javase/overview/index.html

install here on Maverick at least:

/Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/

this JRE is entirely separate from the ones that Apple has installed, which are under /System/Library/Frameworks/JavaVM.framework/Versions/ as another answer mentioned.

Answer 3

如果在Eclipse之类的东西中设置JRE路径，则需要指向/ home目录，即

/Library/Java/JavaVirtualMachines/<Replace with version>/Contents/Home

Answer 4

On my system, evaluating which java leads me to /usr/bin/java . This in turn is a symlink to:

/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java

In case it's relevant, java -version tells me I have 1.6.0_37 installed.

Answer 5

Some of the other answers might be correct but this is what worked for me (which is different and up to date as of January 2016) when installing it on a new computer at the office.

The path as mentioned in another answer is

/Library/Java/JavaVirtualMachines/<Replace with version>/Contents/Home

Here however is a visual guide to getting there, because you can find many directories named "Library". Make sure you are here

then click into JavaVirtualMachines

If you are doing a new setup and just downloaded Android studio, they might have sent you to "Download Java for OS X 2015-001" at https://support.apple.com/kb/dl1572?locale=en_US
That gives you version 1.6.0

That won't work!!!!

I got the error that I needed JDK 7.0 or newer.

I looked for a newer version and found this link from Oracle http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html

I installed it, then selected that one. And it worked

Answer 6

The JDK/JRE as mentioned in previous answers is located in /Library/Java/JavaVirtualMachines/<version>/Contents/Home/. The JRE is dir under this Home. Interestingly browsers doesn't use files from this location for java applet plugin. The location used by browsers is /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/. In fact if you run JRE installer, it updates the files in this location rather than JDK/JRE location.

Answer 7

Enough answers here, but I'm JUST adding a way to find it by yourself

$ sudo find / -name Java
/Library/Application Support/Oracle/Java
/Library/Java
/private/var/root/Library/Application Support/Oracle/Java
/System/Library/Java
/Users/prayagupd/Library/Application Support/Oracle/Java

To be more specific,

$ sudo find / -name jdk*
/Applications/Android Studio.app/Contents/jre/jdk
/Applications/Android Studio.app/Contents/lib/jdkAnnotations.jar
/Applications/IntelliJ IDEA.app/Contents/jre/jdk
/Applications/IntelliJ IDEA.app/Contents/lib/jdkAnnotations.jar
/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk

You see /Library/Java/JavaVirtualMachines/ is the place you need to look inside.

And /Library/Java/JavaVirtualMachines/jdk<version>.jdk/Contents/Home/ is your JAVA_HOME

$ ls -ls /Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/
total 39776
    8 -rw-rw-r--   1 root  wheel      3339 Dec 18  2014 COPYRIGHT
    8 -rw-rw-r--   1 root  wheel        40 Dec 18  2014 LICENSE
    8 -rw-rw-r--   1 root  wheel       114 Dec 18  2014 README.html
  216 -rw-rw-r--   1 root  wheel    110114 Dec 17  2014 THIRDPARTYLICENSEREADME-JAVAFX.txt
  344 -rw-rw-r--   1 root  wheel    173559 Dec 18  2014 THIRDPARTYLICENSEREADME.txt
    0 drwxrwxr-x  44 root  wheel      1496 Feb 28 20:13 bin
    0 drwxrwxr-x   9 root  wheel       306 Feb 28 20:13 db
    0 drwxrwxr-x   9 root  wheel       306 Feb 28 20:13 include
    0 drwxrwxr-x  10 root  wheel       340 Feb 28 20:13 jre
    0 drwxrwxr-x  14 root  wheel       476 Feb 28 20:13 lib
    0 drwxrwxr-x   5 root  wheel       170 Dec 18  2014 man
    8 -rw-rw-r--   1 root  wheel       502 Dec 18  2014 release
39184 -rw-rw-r--   1 root  wheel  20061067 Dec 18  2014 src.zip

Answer 8

The version 8 release from Oracle (1.8.0_40-b25) can be found at:

/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home/bin/java

FYI: Oracle is not following the practice of making /Library/Java/Current (etc) a link to the latest installed java.

Below is my method of keeping up with versions over time: from my .zshrc file:

108 JAVA_6_HOME=/System/Library/Frameworks/JavaVM.framework/Home
109 JAVA_7_HOME=/Library/Java/Current
110 JAVA_8_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home
111 
112 export JAVA_6_HOME
113 export JAVA_7_HOME
114 export JAVA_8_HOME
115 
116 export JAVA_HOME=$JAVA_8_HOME
117 
118 PATH=$PATH:$JAVA_HOME/bin
119