libcommons-validator-java-doc 1:1.6-2 (amd64 binary) in ubuntu bionic

 The Commons Validator is a basic validation framework
 that lets you define validation rules for a JavaBean
 in an xml file.
 .
 Validation rules can be defined in an xml file which
 keeps them abstracted from JavaBean you are validating.
 .
 This package contains the API documentation for libcommons-validator-java.