Re: buff = new StringBuffer(10000); buff.toString(); Will GC be complete here?

From: Chris Uppal (chris.uppal_at_metagnostic.REMOVE-THIS.org)
Date: 02/18/04 

Date: Wed, 18 Feb 2004 12:03:30 -0000

Chris Smith wrote:

> There are three objects involved for each iteration of the loop in main:
> a StringBuffer, a String, and a (internal) char[] which is used to hold
> the real character data.

Well, whatdya know ?

I was about to reply that I thought there must be at least four. The
StringBuffer, its large internal char[] array, the String object, and its small
internal char[] array. Since the String is not allowed to change when the
contents of the StringBuffer are changed, it is not possible for the two
objects to share a common char[] buffer.

But it turns out that the Sun implementation *does* share the buffer, but marks
it copy-on-write in the StringBuffer object.

Live and learn...

Thanks.

    -- chris

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