Char to byte translation

Question

If I would like to use the new java.util.logging.FileHandler and I would like to use this FH to log binary data, that is plain data, not text (by means of a "BinaryFormatter" that wraps the byte[] into a String), how can I make sure that the outputfile generated contains exactly the bytes as wrapped into the string and not a result of a conversion (char->byte) that is a result of the encoding defined in
Sys.prop. file.encoding.
Of course I can write my own FileHandler etc. but I would like to use the std. stuff as much as possible.
In short it comes down to: what characterset has a one-to-one mapping
for every value [0..255]?
Greetings,
Gouweloos

Answer 1

In short it comes down to: what characterset has a one-to-one mapping for every value [0..255]?You can play with this:
char[] chrs = new char[255];  // or 256
for(int j=0;j<chrs.length;j++){
     chrs[j]=(char)j;
String str = new String(chrs);
byte[] byts = str.getBytes("UTF8");//here is the point:  try many other character sets
System.out.print("byte array length: ");
System.out.println(byts.length);
for(int j=0;j<byts.length;j++){
  System.out.print(byts[j]);
  System.out.print(" ");
System.out.println();