Hash table

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Rajesh.Rapaka - 26 Jul 2006 10:46 GMT

Hi,

I am using Hash table for a part of my program. where I am haing index
& values.

Till now I am giving indexes to get values.

but now I want to know what indexes are present in the hash table.

is there a method with which i can get a list of the indexes available
in the hash table.

thanks in advance.
Rajesh Rapaka.

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Bart Cremers - 26 Jul 2006 10:57 GMT

Rajesh.Rapaka schreef:

> Hi,
>
[quoted text clipped - 10 lines]
> thanks in advance.
> Rajesh Rapaka.

Set keySet = Hashtable.keySet();

Regards,

Bart

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Matt Humphrey - 26 Jul 2006 13:20 GMT

> Rajesh.Rapaka schreef:
>
[quoted text clipped - 14 lines]
>
> Set keySet = Hashtable.keySet();

In addition Rajesh, if you don't have a copy of the API documentation, get
it from http://java.sun.com/javase/downloads/index.jsp It's the first place
to look for answers to questions like this.

Cheers,
Matt Humphrey matth@ivizNOSPAM.com http://www.iviz.com/

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Rajesh.Rapaka - 26 Jul 2006 14:23 GMT

> Set keySet = Hashtable.keySet();
>
> Regards,
>
> Bart

Hi,

I guess according the algorithm of Hashtable, the key values are
shuffled. is there any possibility to get the keys in the order I
added?

say I added 1,2,3, & 4. But when I ask for key values I get 2,4,3 & 1.
Is there a posssiblity that i can get it as 1,2,3&4.

Thank you,

regards,
Rajesh Rapaka.

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Bart Cremers - 26 Jul 2006 15:09 GMT

Rajesh.Rapaka schreef:

> I guess according the algorithm of Hashtable, the key values are
> shuffled. is there any possibility to get the keys in the order I
[quoted text clipped - 7 lines]
> regards,
> Rajesh Rapaka.

Not with a Hashtable. You'll need to use a LinkedHashMap to get that
behavior. Note that LinkedHashMap was only add to Java since v1.4.

Regards,

Bart

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Hash table

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