Java: remove weird special characters from String

Question

I want to remove all weird special characters from a string in Java. Are these weird special characters appearing on the form ? (question mark) in MS Word. The following is an image of an example string.

Answer 1

String string=givenString.replaceAll("[^\\p{ASCII}]", ""); 

\ p {ASCII} are the POSIX character classes. It will replace the non ascii string and return the string (Printable ASCII).

Answer 2

This will work:

 String string = yourString.replaceAll("[^\\x00-\\x7F]", ""); 

Answer 3

you can use

 String newString = my_string.replaceAll("\\p{C}", ""); 

Learn more about Java Unicode. Java Unicode regex . Regex here