ASCII char with regex (java)

Question

I have a line like message = "ASDF rfghy !@ #$ :>< "

I want to check this line containing an ASCII value between 0 and 255 using regex (java).

Answer 1

Just use this code to perform this check:

 System.out.println("Matches: " + message.matches("[\u0000-\u00FF]+")); 

Answer 2

You can try regex:

 "^\\p{ASCII}*$" 

Answer 3

In regex, \x00 matches the hexadecimal character 00 , and character classes work on them. So you can do:

 /^[\x00-\x7F]+$/ 

to match a string of one or more ascii values.