Java正则表达式匹配\\ n \\ r和\\ t以外的不可打印字符

Question

I am an absolute beginner in Regex building but i came across a problem:

User input sometimes contains unusual chars like "xA0" character, and I need it removed.

I tried with

string.replaceAll("\\P{Print}", "");

But it matches new line "\\n" character (and i think it matches \\r and \\t) Is there a way to exclude those character from matcher??

Thx in advance :-)

Answer 1

Use a negated char class.

string.replaceAll("[^\\n\\r\\t\\p{Print}]", "");

or

string.replaceAll("(?![\\n\\r\\t])\\P{Print}", "");