Article View: borland.public.jbuilder.java.language
Article #8459Re: How can I read in file into a byte array?
From: Herbert Carl Meyer
Date: Thu, 22 Mar 2001 14:45
Date: Thu, 22 Mar 2001 14:45
25 lines
2054 bytes
2054 bytes
> > How big would I make that "something else"? That was my main question, > how do I know how big to make the array of bytes such that I don't > overrun the end of the array? > > To maybe answer my own question, it looks like the File class might do > what I want using the length() method. I create a new File, then > create an InputStream using the File. > Thinking more, I came up with an approach that would loop, "new" a new b every pass, and add b to a vector collection object after b was read. After file was exhausted, iterate thru the collection, sum sizes, allocate a large block, the arraycopy from the b's. Will end up temporally using twice the amount of storage (plus a bit for the collection object). If you use the fileSize, add padding (5~10% ?), the size may not be absolutely accurate. What are you doing ? I see Interbase, are you sucking a blob out of a database ? > > And don't panic. > > Sound advice in any situation. > And keep a dry towel handy.
Technical Details
Message-ID:
<3ABA1026.F81B68C@mediaone.net>Path:
arc1-ca.pugleaf.net!supernews.google.com!sn-xit-03!supernews.com!hermes2.visi.com!news-out.visi.com!zeus.visi.com!news-out.visi.com!hermes.visi.com!newsfeed.wirehub.nl!PeerFeed.KWeb.on.ca!dnews!64.105.70.175References:
<3AB7BC0C.60473976@borland.com> <3AB7D121.4496BC68@mediaone.net> <3AB7DABB.29AA6493@borland.com>Show Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f74b3,2ea00c6aa2f0fa5a X-Google-Attributes: gidf74b3,public X-Google-ArrivalTime: 2001-03-23 04:06:07 PST Message-ID: <3ABA1026.F81B68C@mediaone.net> Date: Thu, 22 Mar 2001 08:45:58 -0600 From: Herbert Carl Meyer <hcMeyer@mediaone.net> Reply-To: hcMeyer@mediaone.net Organization: Dickson/Unigage X-Mailer: Mozilla 4.76 [en]C-CCK-MCD NSCPCD47 (WinNT; U) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: borland.public.jbuilder.java.language Subject: Re: How can I read in file into a byte array? References: <3AB7BC0C.60473976@borland.com> <3AB7D121.4496BC68@mediaone.net> <3AB7DABB.29AA6493@borland.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit NNTP-Posting-Host: 64.105.70.175 X-Trace: 22 Mar 2001 06:49:58 -0800, 64.105.70.175 Lines: 26 Path: arc1-ca.pugleaf.net!supernews.google.com!sn-xit-03!supernews.com!hermes2.visi.com!news-out.visi.com!zeus.visi.com!news-out.visi.com!hermes.visi.com!newsfeed.wirehub.nl!PeerFeed.KWeb.on.ca!dnews!64.105.70.175