Java question about ArrayList[] x

Question

I have always had this one issue with arrays of ArrayLists. Maybe you can help.

//declare in class
private ArrayList[] x;

//in constructor
x=new          


        

Answer 1

I think you cannot make array of generic arraylist because no generic information will be available at runtime.Instead you can do like this:

List[] arr=new ArrayList[30];
arr[0]=new ArrayList();//create new arraylist for every index.