How to Remove string from array after randomly selecting it? Java -

How to Remove string from array after randomly selecting it? Java -

i randomly selecting string array, , after selected create cannot take string again. should "delete" or there improve way?

here code randomly select it,

position = positionlist[(int) (math.random() * positionlist.length)];

deleting improve alternative if utilize arraylist instead of array. because in case of array, have either re-size (that means, have create new array everytime - deadly idea. avoid it), or set index selected null.

but problem approach (setting null) that, may have random selection many times 1 valid random index when left 1 valid index. so, it's improve utilize list, , delete selected element it.

list<string> list = new arraylist<string>(); // populate list. collections.shuffle(list); // shuffle list. string random = list.remove(0); // remove first element

note that, if want original arraylist, later one, can create re-create of it.

java arrays string random