CODEWITHSUNDEEP
javaregex
twome
twome

Reputation: 35

regex to contain only ascii chars on string on java

im trying to validate string to match all ascii chars on java with regex. if there is only ascii chars return true, if there is even single char which is not ascii char return false.

i tried the following:

Pattern.compile("[^ -~\\r\\n\\t]+").matcher(password).find();

and also tried this:

Pattern.compile("[^\\Q A-Za-z0-9!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~\\E]").matcher(password).find();

but it didnt worked. the string im trying to validate:

"abตcdefgh12+"

but both codes return to me true, which means its contains only ascii chars which is not... i want that this string will return false.

thanks!

Upvotes: 0

Views: 197

Answers (1)

Nitin Bisht
Nitin Bisht

Reputation: 5341

Try this:

public static boolean isPureAscii(String s) {
        return Charset.forName("US-ASCII").newEncoder().canEncode(s);
}

Reference: https://docs.oracle.com/javase/1.5.0/docs/api/java/nio/charset/Charset.html

Upvotes: 2

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