This is the problem I'm stuck on, I don't think this is actually completeable. using my IDE I coded up this:
List al1= Arrays.asList();
List al2= Arrays.asList();
pln(""+al1+al2); //[][]
pln(""+(al1==al2)); //false
pln((Arrays.asList()==Arrays.asList())+""); //false
Java will always compare the references here and not the content so idk how people passed this in java

if there are no words, then this is what is outputted:
List finalout = new ArrayList<>();
if(!wordlist.isEmpty())
//do things to fill in the list
return finalout;

I don't know the intricicies of java enough to know if that creates an empty string within the array list.

Can someone help me understand what i'm doing incorrect to be getting this error?
I'm in java:
expected: java.util.Arrays$ArrayList<[]> but was: java.util.ArrayList<[]>