How to select multiple places (sublime) in code in Android Studio?

For both Mac and Windows, just open the Context Menu and click on the "Column selection mode" to enable or disable the behaviour..

Multiline Caret (without mouse)

Windows: CTRL + CTRL(Hold) + ↑ / ↓

Mac: ⌘ + ⌘(Hold) + ↑ / ↓

ESC will end multiline mode.

Change Multi-caret Hotkey

To add a custom Keymap, CTRL+SHIFT+A, type keymap and click on the one with Settings as subtext. Search for Clone Caret Above and Clone Caret Below.

I mapped mine to ALT+SHIFT+↑ / ↓.

Bonus

Try holding combinations of CTRL, SHIFT, and arrows for improved selection power.

You can use Alt + Shift and click multiple locations to for multiple cursor.

To select similar occurrences in files use Alt + j.

For more details : Click Here

I found how and lets share this cool feature with you. I found three cool features:

1. For multiple selection just hold alt + shift then select whenever you want to change by mouse click then type some thing you can write at multiple places at the same time.

2. Another cool feature is column selection. This lets you to click in a great manner and greatly of help especially when you are refactoring.

In most systems it works with holding middleMouseButton and dragging over your code and in others it works by holding alt and selecting code it acts like below:

3. the third cool feature is sublime selection it finds the same word in code and let you change that or append that easily. you can do that by pressing alt + j on Windows / Linux and ctrl + g in mac. Look how it works:

Also as @Narayana said in comments, Ctrl + Shift + Alt + j selects all occurrences in one shot, for one-shot refactoring.