Liferay 7/Liferay DXP Screen Name Validator

Screen Name in Liferay is very important which is unique in the Portal. While creating user the Screen Name is mandatory field and Screen Name represents the actual user in the portal. Sometimes its necessary to validate the screen name entered by the user at the time of creation of users. In this article we will explain how to write Custom Screen Name Validator in the form of OSGI Module. We…