[4012] in java-interest
Re: sizeof() operation
daemon@ATHENA.MIT.EDU (Elliotte Rusty Harold)
Thu Dec 7 12:20:42 1995
From: "Elliotte Rusty Harold" <Elliotte@blackstar.com>
To: java-interest@java.sun.com
Date: Thu, 7 Dec 1995 10:05:56 EST
Reply-To: elliotte@blackstar.com
Cc: George E Crawford <gec2@Ra.MsState.Edu>
X-Confirm-Reading-To: elliotte@blackstar.com
> Is there an equivalence of a sizeof() operation in Java? For
> example, file.skipBytes(sizeof(int)*16);
sizeof isn't necessary in Java because all sizes are precisely
defined. i.e. an int is always 4 bytes. In the example you cite just
use file.skipBytes(4*16).
This may not seem to be adequate when dealing with objects that
aren't base data types. However even if you did know the size of
a particular object, you couldn't do anything with it anyway.
There's no copy or serialize method in the Object class so there's no
reason to need that information. This is all part of Java separating
you from physical memory.
--
Elliotte Rusty Harold Black Star Publishing Co., Inc.
elliotte@blackstar.com 116 East 27th Street
elharo@shock.njit.edu NY NY 10016
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