java - Array or ArrayList -

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i familiar using arrays came across arraylist , wondering if typically use arraylist more regular array?

for reference arraylist looks :

arraylist<dog> mydogarraylist = new arraylist<dog>();

regular array:

string [] dog = new string(type)

arraylists (or, in general, collections) intended heavy read , write operation without thinking capacity, extension , forth (in first place). more comfortable call arraylist#add creating new array size oldarray.length + 1, doing system.arraycopy , adding element. there lots of handy methods (indexof, remove, sublist) leverage complexity of use in comparison arrays.

if take @ collections class, you'll find lot of convenience methods shuffle or reverse.

the use of list in general more common arrays, except you're heading performance.


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