How to accept an arraylist into a method

Question

just a quick question.. how do you accept an arraylist into a method? Right now I have:

public void getHandValue(ArrayList< Card > hand) {...}

Just the word "ArrayList" is coming up as an error. The arraylist is in my main args. I'm very new to java so I'm sorry if this is a dumb question. Thanks in advance!

Answer 1

A good practice is to use List < Card > in your signature, too. Even if you're passing an ArrayList into the method.

You should try to keep your methods as generic as posssible.

Answer 2

Have you imported it at the beginning of your class file?

import java.util.ArrayList;