java - How can I create an Array of ArrayLists?

Question

I am wanting to create an array of arraylist like below:

ArrayList<Individual>[] group = new ArrayList<Individual>()[4];

But it's not compiling. How can I do this?

Answer 1

As per Oracle Documentation:

"You cannot create arrays of parameterized types"

Instead, you could do:

ArrayList<ArrayList<Individual>> group = new ArrayList<ArrayList<Individual>>(4);

As suggested by Tom Hawting - tackline, it is even better to do:

List<List<Individual>> group = new ArrayList<List<Individual>>(4);