hi,

   i'm currently writing a simple graphics app which includes a save
file function. This works 99% of the time but when reading the file
back there are anomalies in some pixels (only about 1%) they're saved
as ARGB but that seems irrelevant as a hexeditor shows the file doesn't
seem to contain the bytes i'm sending it.

much head scratching and testing lead to me to notice that only certain
values seem to cause problems - 140 for one, so a bit of testing lead
to this :-

File f = new File("writetest");
FileWriter out = new FileWriter(f);
int i=140;
d("write byte ="+i);  // writes to sys out
out.write(i);
i++;
d("write byte ="+i);
out.write(i);
out.close();

FileReader in = new FileReader(f);
i = in.read();
d("read byte = "+i);
i = in.read();
d("read byte = "+i);
in.close();

which gives the follwing output !!!!

write byte =140
write byte =141
read byte = 63
read byte = 63

as i mentioned 99% of pixels are correct (on screen and in hex editor)
have i gone nuts or can anyone shed any light? winxp and jdk 1.4.2 by
the way.

many thanks in advance

mark