Jeff Verdegan wrote:It is absolutely, 100% per HashMap or HashSet instance. There is no sharing across the JVM or OS.
Iteration is O(N) for all collections,
Thanks Jeff, it was helpful.
Jeff Verdegan wrote:Eh? One doesn't typically iterate through a phone book.
Not convince jeff!!...you, specially in touchscreen phone, people iterate it on phonebook using right side scrollbar, also, i need to support the use case where user can enter in phonebook and press the down button one by one to SCROLL the contacts, try in your phone, it will work :-)