What is the difference in adding the [] to an ArrayList a, as opposed to initializing like ArrayList b? Is there any purpose for one way or the other?
ArrayList<Integer> a[];
ArrayList<Integer> b;
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The same as the difference between a `int[]` and an `int`. – Elliott Frisch Apr 23 '16 at 02:00
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ArrayList<Integer> b; is declaring a reference to an array list that contains integers, named b.
ArrayList<Integer> a[]; is declaring a reference to an array of array lists that contain integers, named a.
ArrayList<Integer> a[] is the same as ArrayList<Integer>[] a.
Luke Joshua Park
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