Requirements

implementation 'org.springframework.boot:spring-boot-starter-validation'

Code

import javax.validation.constraints.Max;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

@Builder
@NoArgsConstructor
@AllArgsConstructor
@Data
public class BlogDTO {
  @Max(150)
	private int id;
	private String title;
	private String content;

}