Basic for Date [Java/Kotlin]


In this article, I would like to share some tips of Date class in Java.

🐞 Basic knowledge for Date Class in Java

  • Except a DB access part, use java.time.LocalDateTime or java.time.LocalDate. java.util.Date is NG.
  • In a DB access part, use java.sql.Timestamp exceptionally.

🏀 Pattern to parse date string

Pattern to parse date string 2013-03-13T20:59:31+0000 is yyyy-MM-dd'T'HH:mm:ssZ.

@JsonFormat(pattern = "yyyy-MM-dd'T'HH:mm:ssZ")
val dateCreated: LocalDateTime
  • HH: 24-hour time notation
  • hh: 12-hour time notation

🐠 Convert unixtime to Date

Converting Unixtime into Date Object is as follows:

Date time = new Date((long) timeStamp * 1000);

👽 Special Thanks

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