Jun 30, 2011 · Is it possible to copy only a part of an arraylist to a new arraylist, Efficiently. for eg: copy elements between position 5 and 10 from one arraylist to another new arraylist. In my application the …

17 There are no implicit copies made in java via the assignment operator. Variables contain a reference value (pointer) and when you use = you're only coping that value. In order to preserve the contents of …

Apr 4, 2009 · List<Double> original = List<Double> copy = new ArrayList<Double>(original); clone() was designed with several mistakes (see this question), so it's best to avoid it. From Effective Java 2nd …

Nov 24, 2016 · This contrasts to calling ArrayList.clone(), which performs a shallow copy of the List. In this context a shallow copy creates a new List instance but containing references to the original objects.

Namely, without referencing the same object, I need to copy values of elements of one list into another list. These are the lists: List<Integer> listA = new ArrayList<Integer> (); List<

Apr 7, 2010 · I need a shallow copy of an java ArrayList, should I use clone() or iterate over original list and copy elements in to new arrayList, which is faster ?

May 6, 2015 · List<Movie> newList = new ArrayList<Movie>(oldList); You should know that this creates a shallow copy of the original ArrayList, so all of the objects in both lists will be the same, but the two …

Aug 2, 2018 · I am trying some java for first time. I tried creating an arraylist of arraylist and wanted to deep copy one arraylist into another arraylist. When executed the below code I get error: import java...

Mar 27, 2009 · The fact that ArrayList has some sort of buffer capacity is an implementation detail - it's not part of the List interface, so Collections.copy(List, List) doesn't use it. It would be ugly for it to …

Aug 12, 2011 · Possible Duplicate: How to clone ArrayList and also clone its contents? trying to make a copy of an ArrayList. The underlying object is simple containing on Strings, ints, BigDecimals, Dates …