Private variable java question

Question

what is the use of private variable when we can use getter and setter to alter variable info?

Answer 1

When you use a private variable it doesn't have getters and setter by default you're the one who code those methods so you can avoid the setter and *bum* you can't alter the variable!

Answer 2

@oyl it's more of a good practice, like you could make your setter check if the value you're trying to enter is valid for that variable otherwise when you have a public variable you just change it with the wrong value and that can ruin your code!

Answer 3

@André Martins if you want to alter at the first place.why dont you just use public?why do u have to block your own access and then allowing it again.

Answer 4

@André Martins how do u use setter to check?can you provide an example.sorry for asking so many questions.i really want to improve