Servo and robot arm question

I'm a newcomer to microcontrollers and that stuff, is it possible to make a robot arm that runs on an UNO and that can be programmed to do what I want in one go?

PLEASE answer.

is it possible to make a robot arm that runs on an UNO and that can be programmed

Yes

to do what I want in one go?

That depends on what you want to do.

PLEASE give us some clues ?

Well the answer has to be YES, but you'll need to be a lot more specific about what you want it to do, what your skills are and so on. Start by looking at the servo library functions and then follow the links to the knob and sweep examples.