Are runtime strings still imutable ?

From: Rob Jones (nospam_at_dontbother.com)
Date: 03/31/04 

Date: Wed, 31 Mar 2004 17:52:32 +0100

Hi all,

Anyone know the details about String immutability ?

I understand the need to have imutable strings at compile time.
However if at runtime I have say 8000 strings and then I make
a new string from an existing string using substring
does that mean that my exisint 8000 strings will be searched
incase I am making a duplicate ?
That seems quite an overhead ?

Equally once I have created this new String once it becomes
eligible for garbage collection will the immutable String
be removed from the immutable string collection ?
IE will I just lose a reference to an immutable String object
or will that immutable String object be resuable for new
String objects that are created to have the same value ?
Does that mean creating/deleting lots of Strings can build
up an unfreeable area of memory ?

Thanks

Rob

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