EBCDIC ascii conversion?

[Sylvain]

Hello,
----------------------------------------------------------------------------
--------------------------------
I am trying to encode/decode unicode to/from ebcdic character string. When I
try the following:

String sEbcdic = "1234567890abcdefghijklmnopqurstuvwxyz";
String sReencodedEbcdic = null;
try {
String sReturnEbcdic = (new String(new String(sEbcdic.getBytes(),
"8859_1").
getBytes("cp037")));
sReencodedEbcdic = (new String(new String(sReturnEbcdic.getBytes(),
"cp037").getBytes("8859_1")));
System.out.println(sReencodedEbcdic);
}
catch (java.io.UnsupportedEncodingException e) {}

----------------------------------------------------------------------------
--------------------------------

I am getting the following output:

1234567890bcdefghijklmnopqurstuvwxyz

The 'a' character is not converted back!

Anyone ever had this problem?

Thanks

Sylvain

 

[Roedy Green]

String sEbcdic = "1234567890abcdefghijklmnopqurstuvwxyz";
String sReencodedEbcdic = null;
try {
String sReturnEbcdic = (new String(new String(sEbcdic.getBytes(),
"8859_1").
getBytes("cp037")));
sReencodedEbcdic = (new String(new String(sReturnEbcdic.getBytes(),
"cp037").getBytes("8859_1")));
System.out.println(sReencodedEbcdic);
}

Here's how I would write that code:

import java.io.UnsupportedEncodingException;

public class EbcdicTest
{

/**
* test harness
*
* @param args not used
*/
public static void main ( String[] args ) throws
UnsupportedEncodingException
{
// System 390 EBCDIC
String encoding = "Cp1047";

// microsoft proprietary USA
// encoding = "Cp037";

// IBM PC OEM DOS
// encoding = "Cp437";

String unicode = "1234567890abcdefghijklmnopqrstuvwxyz";
byte[] ebcdic = unicode.getBytes( encoding );
String reconsituted = new String( ebcdic, encoding );
System.out.println( unicode );
System.out.println( reconsituted );
}
}


It works fine with all three encodings.

 

[Thomas Weidenfeller]

The 'a' character is not converted back!

Run a debugger and check every intermediate result. Once you know which
of the conversions went wrong, check Sun's bug parade if this is a known
bug.

If you use an old VM, upgrade to the latest (released) VM. Try again. If
the problem is still there, if you have isolated it to one method, file
a bug report with Sun, and provide a demo program.

/Thomas