Install Oracle's JRE on Mac OS X

install-jre-macosx-x64.sh

#!/bin/bash

# DISCLAIMER! Although this file *could* be executed, I recommend against running this whole file.
# This is because I have not added any error checking
# If, for example, you did not download the correct JRE file to your Downloads folder, or saved it elsewhere, this will likely move your home directory

# If you have ignored that and just want to run the file anyway (it's faster, after all) you'll need to do this in Terminal:
#cd ~/Downloads/
#chmod +x install-jre-macosx-x64.sh
#sudo ./install-jre-macosx-x64.sh

# Make sure to download the latest JRE from here: http://www.oracle.com/technetwork/java/javase/downloads/index.html
# You should end up with a file in your Downloads folder named something similar to jre-8u60-macosx-x64.tar.gz

# Go to the download and unpack it
cd ~/Downloads
tar -xzf `ls -1 jre-8u*-macosx-x64.tar.gz | sort -rn -t u -k 2 | head -1`

# Now move to this newly created directory
cd `ls -1d jre1.8.*.jre/ | sort -rn -t _  -k 1.8 -k 2 | head -1`

# **If you just received an error message on any of the previous commands, do not continue!**

# Edit the Info.plist so that it is usable from the command line and to open Java applications
defaults write `pwd`/Contents/Info.plist JavaVM -dict-add 'JVMCapabilities' '<array><string>JNI</string><string>BundledApp</string><string>CommandLine</string></array>'

# Fix a permissions issue created by using `defaults write`
chmod 0644 Contents/Info.plist

# The previous command converted the Info.plist file to a binary format, which is okay, but it is not as user friendly, so lets change it back
plutil -convert xml1 `pwd`/Contents/Info.plist

# Now we need to move it to the Java Virtual Machines folder. This requires sudo privileges 
sudo mv `pwd` /Library/Java/JavaVirtualMachines/

# Create some folders and links for backwards compatibility that some applications require
mkdir -p Contents/Home/bundle/Libraries
cd Contents/Home/bundle/Libraries
ln -s ../../lib/server/libjvm.dylib libserver.dylib

# If you just ran this, and your home directory is now in /Library/Java/JavaVirtualMachines/ you can recover by moving it back with
#sudo mv /Library/Java/JavaVirtualMachines/<username> /Users/
# Make sure to replace "<username>" with your username. You can double check the contents of the JavaVirtualMachines folder with:
#ls /Library/Java/JavaVirtualMachines/

# Some people like to use JAVA_HOME environment variable, but general users do not require it
# If you need it for whatever reason, uncomment the following lines
#echo export JAVA_HOME=`/usr/libexec/java_home` >> ~/.bash_profile
#chmod u+x ~/.bash_profile

# Some troublesome apps still wont work, and require being tricked into thinking Java 6 is installed.
# As of El Capitan, this is much harder to do, because it prevents System files from being modified by the user with System Integrity Protection (SIP)
# SIP can only be disabled by booting into recovery mode (hold Command+R on startup) the in Terminal (found in Utilities menu)
#csrutil disable
# Reboot your computer so that you are no longer in Recovery Mode
#sudo mkdir -p /System/Library/Java/JavaVirtualMachines/1.6.0.jdk
#sudo mkdir -p /System/Library/Java/Support/Deploy.bundle
# Reboot into Recovery Mode (again) and enable SIP again
#csrutil enable
# Reboot (yes, again) and you should be good to go.

# Not all applications will work with the latest Java. It may be that you just have to install legacy Java 6 runtime.
# This can be found here: https://support.apple.com/kb/DL1572?locale=en_US