How to install Java 8 on Mac

2018-06-07 15:19:13

I want to do some programming with the latest JavaFX, which requires Java 8. I'm using IntelliJ 13 CE and Mac OS X 9 Mavericks. I ran Oracle's Java 8 installer, and the files look like they ended up at

/Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk

but previous versions are at

/System/Library/Java/JavaFrameworks/jdk1.6....

Not sure why the latest installer puts this in /Library instead of /System/Library (nor what the difference is). But /usr/libexec/java_home doesn't find 1.8, so all the posts I've found on how to set your current java version don't work. I've tried adding a symbolic link to make it look like 1.8 is in the /System/Library... path, but it doesn't help. /usr/libexec/java_home -V still only lists the old java 1.6.

Ironically, the "Java" control panel under System Preferences shows only java 1.8!

Why doesn't Oracle's installer put it where it really goes? And how can I work around this problem?

Don't rely on Oracle to install Java properly on your Mac.

Use Homebrew:

brew update
brew cask install java

If you want to manage multiple versions of Java on your Mac, consider using jenv.

UPDATE: Now that Java 8 is no longer the most current version, we need to install it this way:

brew tap caskroom/versions
brew cask install java8

To get a list of all older versions of java: brew cask search java

We use brew cask since we'd otherwise use the Oracle GUI installer that will likely not install Java properly on your Mac. (Use brew cask install APP to install GUI apps; use brew install APP.) Java is not a GUI app; It should not require "cask" but at least Oracle is consistent.

For El Capitan , Sierra and High Sierra

First install and update brew from Terminal:

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

brew tap caskroom/versions

brew update

Java 8:

brew cask install java8

Java 9 (Latest):

brew cask install java

I just did this on my MBP, and had to use

$ brew tap caskroom/versions
$ brew cask install java8

in order to get java8 to install.

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