PrintWriter change 0x80 to question mark ??

Question

hi,
I'm encountering a weird behaviour from this code fragment:
<snip>
PrintWriter pw = new PrintWriter(new BufferedWriter(new
FileWriter(filename)));
for (int i=0x80; i <= 0xA0; i++) {
pw.print((char) j);
<snip>
the file will only have a series of '?' written there. using hex editor I see the value is 0x3F.
Can anyone please explain why this is happening? Why I write 0x80, but I get 0x3F?? How to fix this?
Thanks & Regards,
Antony Hoon

Answer 1

O.K the point was trying to write characters which r not printable....so
u cant use the character writers or readers....they tend to change the data mentioned in my previous post.
So use any byte output stream like FileOutputStream and write to the files. And also read using byte streams...
Instead of this
<code>
FileWriter fo = new FileWriter("c:\\print");
          char[] b = new char[256];
          for(int i=0; i<256; i++)
          b[i] = (char) i;
          fo.write(b);
          fo.close();
<code>
use this
<code>
FileOutputStream fo = new FileOutputStream("c:\\print");
          byte[] b = new byte[256];
          for(int i=0; i<256; i++)
          b[i] = (byte) i;
          fo.write(b);
          fo.close();
<code>
U can see the difference of outputs.
Besto
guru