java - Regex to mask a PhoneNumber -

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i need mask phonenumber result is

 (***)-(***)-xxxx

xxxx being last 4 digits of number.

right code 

 string mask = phonenumber.replaceall("(?<=.).(?=[^-()]*?.-)", "*");

result (***)***x-xxxx. 

  string mask1 = phonenumber.replaceall("(?:[^()-])", "*");

result 

 (***)-***-****

i not able know mistake making.

$string =~ s{([0-9]{3})([0-9]{3})([0-9]{4})}{($1)-($2)-$3}g;

try replace.


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