Hashtable in Java

Re: Hashtable in Java

Chandu wrote:
[color=blue]
> Is there a way to optimize the use of Hashtable in java in terms
> of Memory[/color]

Upon creation of a Hashtable, you often have some idea of the number of
Objects that will immediately be put into it, so you can set the initial
capacity to something that suits you. You can also set the load factor,
but the default one should be just fine for most common uses.
[color=blue]
> and lookups[/color]

Easy, don't look up more than you need to. If you need to use a value from
the Hashtable several times in the same block (method or whatever), make a
reference to it and use that instead of looking up more than once.
[color=blue]
> what exactly are collisions in a hastable and how does it affect
> performance.[/color]

<URL:http://java.sun.com/j2se/1.4.2/docs/api/java/util/Hashtable.html>