1. What is Bean Validation Bean Validation이란 무엇인가? 다음에 대한 설명을 해당 사이트에서 찾아왔다. Jakarta Bean Validation is a Java specification which lets you express constraints on object models via annotations lets you write custom constraints in an extensible way provides the APIs to validate objects and object graphs provides the APIs to validate parameters and return values of methods and constructors reports..