Thanks as always to Jason, our master Historian. On Wed, Dec 19, 2018 at 2:14 AM Steve Groeger <groe...@uk.ibm.com> wrote:
> > Yes, the intent was to leave the backing array the same size in order to > avoid to have the resize of it when a new element is added. > So, if someone wanted to reduce the size of the backing array then they > could use the ArrayList.trimToSize() method. If you knew you wanted to add exactly one element after making a copy, an (distasteful but effective) performance hack might be to add the element to the source ArrayList, copy using ArrayList(Collection) and then remove the element from the source.
