non-printable special characters

[akhter wahab]

i am writing excel file using jxl library but there are non-printable special characters in the text how can i remove that thanks in advance

[Campbell Ritchie]

Sounds like a job for a regular expression.

[akhter wahab]

Campbell Ritchie wrote:Sounds like a job for a regular expression.

i already found two regex but don't know what exactly they are doing here are the both regex

newString = origString.replaceAll("[^\\p{Print}]", "");  

String truncated = originalString.replaceAll("\\p{Cntrl}", "");  

can you please elaborate these regex
Regards

[Stephan van Hulst]

The first one replaces all non-printable characters with the empty string. The second one replaces all control characters (not necessarily every non-printable character) with the empty string.