On Mon, Nov 15, 2004 at 03:39:01PM -0600, Filip Hanik - Dev wrote:
> this was not the case when using a java.io.FileOutputStream(), so I assume
> you tried and verified this :)
You are confused. It _is_ the case with FileOutputStream. The only
way it could be otherwise is if the output stream re-opens the file, either
on every write, or when it notices that the file name no longer refers to
the same file.
Create aa.java with this code:
import java.io.*;
public class aa
{
public static void main(String[] args) throws Exception
{
FileOutputStream f = new FileOutputStream(args[0]);
f.write(80); f.flush();
synchronized(f) { f.wait(5 * 1000); }
f.write(81); f.flush();
}
}
And run this:
java aa foo &
mv foo bar
Notice that the output of the second write (which occurs after the file
is renamed) is in the original file (bar), not in a new foo.
eric
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