Hash table

[Rajesh.Rapaka]

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.

 

[Bart Cremers]

Rajesh.Rapaka schreef:

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.

Set keySet = Hashtable.keySet();

Regards,

Bart

 

[Matt Humphrey]

Rajesh.Rapaka schreef:


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 (e-mail address removed) http://www.iviz.com/

 

[Rajesh.Rapaka]

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.

 

[Bart Cremers]

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
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.

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