Validation Annotations in Spring Boot

Annotation Details

• @NotBlank
  • use it over a string property(non null + non empty)
• @Email
  • valid email format
  • private String email;
• @NotBlank and @Pattern
  • @NotBlank @Pattern(regexp="((?=.*\\\\d)(?=.*[a-z])(?=.*[#@$*]).{5,20})") private String password;
• @NotNull
  • use it over a non string property(non null) to avoid NPExc.
• @Range or @Min and @Max
  • @Range(min=200,max=2000) OR @Min and @Max private double regAmt;
• @NotNull and @Future
  • @NotNull //MUST add @NotNull for non string props to avoid NPExc. @Future //reg date must be from future //def date format : yyyy-MM-dd @DateTimeFormat(pattern="dd-MMM-yyyy") //to customize date time format private LocalDate regDate;