How to click on home back and recent button in android?

How to press any two buttons at the same time?

Thank you for the reply, but i think i need to correct my question,

“How do I press Volume down button and Power button at the same time using appium”

Thank you

How to press volume down and power at the same time, i need this to take screenshot.

Hello i want to make an autoclicker, and in particular i need to know how to simulate the overview (or recents) button (the button who shows me all background apps), i’m a noob in java.
I’m using eclipse (my pc doesn’t support Android Studio) when i import libraries he suggests me to create io class, whyy?? And if I need to download libraries how and where i need to place them?
(Sorry for my english).