array required, but ArrayList found

Question

I have a ruby backround and im new to java i wrote a basic programm but somehow i get a error i cant fix! My code:

import java.util.ArrayList;

public class Musi         


        

Answer 1

files is an ArrayList and not an Array instead of doing files[i] you must do this-

        for(int i = 0; files.size() <= i; i++){
            System.out.println( i + ". Ist: " + files.get(i));
        }