Package io.github.rabinarayanpatra.sanitizer.builtin

Class SSNMaskSanitizer

java.lang.Object

io.github.rabinarayanpatra.sanitizer.builtin.SSNMaskSanitizer

All Implemented Interfaces:

FieldSanitizer<String>

public class SSNMaskSanitizer
extends Object
implements FieldSanitizer<String>

Sanitizer that masks a U.S. Social Security Number (SSN), revealing only the last four digits.

Non-digit characters are removed before masking. If the cleaned input does not contain exactly 9 digits, the original input is returned unchanged.

 
 String input = "123-45-6789";
 String masked = new SSNMaskSanitizer().sanitize(input); // "***-**-6789"
 
 

Since:

1.0.0

See Also:

• FieldSanitizer

Constructor Summary

Constructors

Constructor	Description
SSNMaskSanitizer()	Default constructor.

Method Summary

Modifier and Type	Method	Description
@Nullable String	sanitize(@Nullable String in)	Masks a Social Security Number by stripping non-digit characters and preserving only the last four digits.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SSNMaskSanitizer

public SSNMaskSanitizer()

Default constructor.

Method Details

sanitize

public @Nullable String sanitize(@Nullable String in)

Masks a Social Security Number by stripping non-digit characters and preserving only the last four digits.

Specified by:

sanitize in interface FieldSanitizer<String>

Parameters:

in - the input SSN string

Returns:

the masked SSN, or the original input if the cleaned string is not 9 digits; null if input is null