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Article #994

Re: OutOfMemoryError

#994
From: Owen Green
Date: Wed, 03 Jul 2002 12:20
38 lines
2654 bytes
"Alan Shiers" <ashiers@hfx.eastlink.ca> wrote in message
news:3D226288.1C7C905@hfx.eastlink.ca...
> Hi guys,
>
> I've been busy trying to implement the new code and I'm having a problem
> with the conditional statement of the while loop.
>
> myFile = new File("C:\somepath\somefile");
> if(myFile.exists())System.out.println("file exists");
> FileIn = new FileInputStream(myFile);
>
> byte[] buffer = new byte[128];
> int n;
> while((n = FileIn.read(buffer)) >= 0)  << Problem line
> {
>     rq.output.write(buffer);
> }
>
> The FileIn object is a FileInputStream object and everytime at runtime I
> get an IOException stating that it has a "Bad file descriptor".  I don't
> understand what it is telling me or how to fix it.
>
> Earlier, I had created a File object using an absolute file path and
> file name. Even tested it with the File.exists() method, which returned
> true, and used the File object as an arguement for the FileInputStream
> object, like so: FileIn = new FileInputStream(myFile);

Isn't that exactly what you've shown above?

> What is causing this "Bad file descriptor" thing?

I'm not sure :) It could be
a) That it doesn't understand what you're asking it; are you really writing
win32 paths as "c:\blah\blah" as oppossed to "c:\\blah\\blah" or
"c:/blah/blah"?
b) There are a limited number of FD's available, afaik, do you have lots
open at any one time? (this includes sockets, btw).
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References: <3D20CC5D.B70473C9@hfx.eastlink.ca> <MPG.178acb912dba8f7998b79d@newsgroups.borland.com> <3D21C1CA.F2D953E2@hfx.eastlink.ca> <3d21bb44_1@dnews> <3D21EC78.228A5CD3@hfx.eastlink.ca> <3d21e07b_2@dnews> <3D226288.1C7C905@hfx.eastlink.ca>

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From: "Owen Green" <owen@begonefoulmachine.kennulz.demon.co.uk>
Newsgroups: borland.public.jbuilder.java.api
References: <3D20CC5D.B70473C9@hfx.eastlink.ca> <MPG.178acb912dba8f7998b79d@newsgroups.borland.com> <3D21C1CA.F2D953E2@hfx.eastlink.ca> <3d21bb44_1@dnews> <3D21EC78.228A5CD3@hfx.eastlink.ca> <3d21e07b_2@dnews> <3D226288.1C7C905@hfx.eastlink.ca>
Subject: Re: OutOfMemoryError
Date: Wed, 3 Jul 2002 13:20:51 +0100
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