I assume no responsibility for the use of these instructions, or any negative impact they may have. You probably shouldn't do this. (Unless you really, truly hate vile cruftware like Java.)
- Reboot into Recovery Mode.
- Power-on and hold
⌘ + R
until Apple Logo appears. - If your hard drive is encrypted:
- Start "Restore From Time Machine Backup"
- Click "Continue" until you are asked to unlock the hard drive.
- Enter your password, then quit Time Machine Restore.
- From the menu bar, choose
Utilities -> Terminal
- Delete that jazz:
cd /Volumes/Macintosh\ HD
rm -rf usr/bin/java*
rm -rf usr/lib/java
rm -rf usr/libexec/java_home
rm -rf usr/share/java
rm -rf usr/share/man/man1/java*
rm -rf System/Library/Frameworks/JavaVM.Framework
rm -rf System/Library/Java
- Good riddance to bad rubbish.