@JsonAutoDetect

@JsonAutoDetect

@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
@JsonAutoDetect(getterVisibility = JsonAutoDetect.Visibility.NONE,
        isGetterVisibility = JsonAutoDetect.Visibility.PUBLIC_ONLY,
        setterVisibility = JsonAutoDetect.Visibility.PUBLIC_ONLY,
        creatorVisibility = JsonAutoDetect.Visibility.NON_PRIVATE,
        fieldVisibility = JsonAutoDetect.Visibility.PUBLIC_ONLY)
private static class Student implements Serializable {
    private static final long serialVersionUID = -3289647584974663707L;
    public String name;
    private Integer age;
    private String job;
    private GenderEnum gender;
    private Date birthday;
    private String json;
}

Instant from = LocalDateTime.parse("2021-01-09 00:00:00", DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss", Locale.ENGLISH)).toInstant(ZoneOffset.MAX);
Student supa = Student.builder().name("supa").age(20).gender(GenderEnum.MALE).birthday(Date.from(from)).build();
System.out.println(new ObjectMapper().writeValueAsString(supa));