Need Hex conversion to char for 4 digits.

Question

I need to read a file in and translate some of the characters into integers. I need the hex value from the character. Problem is, when using Cp850 which is the encoding of the file, some characters show as ? instead of the proper character.
A simple output shows the problem where only 4 digit hex values will not appear correctly. You can view the character set and values at the following URL http://www.microsoft.com/globaldev/reference/oem/850.htm
Here is a simple app to show the problem.
public class EncodingTest {
     public static void main(String[] args) throws Exception {
          String encoding = "Cp850"; //args[ 0 ];
          byte[] b = new byte[256];
          for (int i = 0; i < 256; i++)
               b[i] = (byte)i;
          byte c[] = new byte[1];
          String x = new String(b, encoding);
          for (int i = 0; i < x.length(); i++) {
               c[0] = b;
               if (x.charAt(i) != i)
                    System.out.println(i + " -> " + (int)x.charAt(i) + "->" + (new String(c, encoding)));
How to I get character 176 for example to show correctly? I tried to post the output from the app but all of the characters showed as ?.

Answer 1

Well, if you want to convert int or char values to hex, just do the following:
Integer.toHexString(int value);
Now, about your charset problem, I tried it and found out that you will definetly not be able to print strange characters in DOS.
I'll show you my example, it might help you; it prints out good in my computer...
public class EncodingTest {
    public static void main(String[] args) throws Exception {
        String encoding = "Cp850"; //args[ 0 ];
        byte[] b = new byte[256];
        for (int i = 0; i < 256; i++)
            b[i] = (byte) i;
        byte c[] = new byte[1];
        String x = new String(b, encoding);
        for (int i = 0; i < x.length(); i++) {
            c[0] = b;
if (x.charAt(i) != i)
System.out.println(i + " -> " + Integer.toHexString((int)x.charAt(i)) + "-> " + (int)x.charAt(i) + "->" + (char) i + "->" + (new String(c, encoding)));