Install Oracle Java on Ubuntu 14.04 / Mint17

Trick Source Trick Source2

$ sudo apt-add-repository ppa:webupd8team/java
$ sudo apt-get update
$ sudo apt-get install oracle-java8-installer

Enable developer setttings in Android Jelly Bean

Trick source

It seems that in the latest versions of Android the Developer Settings Menu is hidden. That's the way to unlock it:

• Go to the settings menu, and scroll down to "About phone." Tap it.
• Scroll down to the bottom again, where you see "Build number."
• Tap it seven (7) times. After the third tap, you'll see a playful dialog that says you're four taps away from being a developer. Keep on tapping, and voila, you've got the developer settings back.