Differences between .Net Hashtable, Java Hashtable & HashMap

Question

Am I correct in saying that a .Net Hashtable is not synchronized while a Java Hashtable is? And at the same time a Java HashMap is not synchronized and has better performance?

I am rewriting a Java app that makes heavy use of HashMaps in C# and I would like to use a HashTable and ensure that the performance is basically equivalent.

Your question is somewhat unclear about what your goals are in asking this question. Please consider revising a bit so it's more clear what you're hoping to learn exactly. — Jon
– Jon, Commented Jul 31, 2009 at 1:14

Jon · Accepted Answer · 2009-07-31 01:13:41Z

6

I think what you're asking is if HashMaps in Java and HashTables in C# act in roughly the same way and you're largely correct from a performance point of view. HashMaps as I recall do not complain if you insert duplicate keys whereas HashTable in C# will.

answered Jul 31, 2009 at 1:13

Jon

2,0952 gold badges20 silver badges28 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Noah Heldman · Accepted Answer · 2009-12-29 20:22:31Z

0

By default, .NET Hashtables are not synchronized, but you can create a synchronized wrapper around one, like so:

Hashtable myHash = Hashtable.Synchronized(new Hashtable());

answered Dec 29, 2009 at 20:22

Noah Heldman

6,9044 gold badges42 silver badges42 bronze badges

Collectives™ on Stack Overflow

Differences between .Net Hashtable, Java Hashtable & HashMap

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related