Remove non-ASCII non-printable characters from a String

Question

I get user input including non-ASCII characters and non-printable characters, such as

\\xc2d
\\xa0
\\xe7
\\xc3\\ufffdd
\\xc3\\ufffdd
\\xc2\\xa0
\\xc3\\xa7
         


        

Answer 1

Input => "This \u7279text \u7279is what I need" Output => "This text is what I need"

If you are trying to remove Unicode characters from a string like above this code will work

Pattern unicodeCharsPattern = Pattern.compile("\\\\u(\\p{XDigit}{4})");
Matcher unicodeMatcher = unicodeChars.matcher(data);
String cleanData = null;
if (unicodeMatcher.find()) {
    cleanData = unicodeMatcher.replaceAll("");
}