Struts framework offers a number of built-in validators which are called as bundled validators. These validators are for input validations such as email, phone number, user id.

Struts offer the following bundled validators.

  • requiredstring validator
  • stringlength validator
  • email validator
  • date validator
  • int validator
  • double validator
  • url validator
  • regex validator
BY Best Interview Question ON 15 Jan 2019