String something = "hello"; Bouncer.makeSure("Attribute", something)	.isNotBlank()	.isNotLongerThan(10)	.isNotShorterThan(5)	... many more. 

class Employee {	@StringLengthRange(minLength = 4)	@NotNull	String id;	@StringLengthRange(minLength = 4, maxLength = 64)	@NotNull	String name;	@StringAnyOf(values = {"IT", "HR", "SALES"})	@NotNull	String department;	@StringValidUrl	String profileUrl; } 

Employee emp = something. Bouncer.validate(emp);