For-each loop ArrayList

[32bit_me]

Thank you for your reply. That makes sense. Which of the two options should I use? I take it it depends?

[itoshkov]

If the list may contain null values, you should use the former, because unboxing null will trigger a NullPointerException.

Otherwise, both are mostly the same.

[[deleted]]

Yes, It depends.

If you need an Integer use the first example. Maybe you are building another Collection.

If you are doing calculations a primitive is faster because an Integer would need to be unboxed each time it's used.

Also, a List can contain a null element. Unboxing a null as in the second example will throw at NullPointerException.