All About Java 8+ Date Time API in 2025 | Interview Question & Answer for Experienced | Code Decode

Published: 11 September 2025
on channel: Code Decode

4,189

In this video of code decode we have explained all about java date time api which is important part of daily coding for experienced developer

Udemy Course Discounted coupon code
https://www.udemy.com/course/master-s...

The Java Date/Time API is one of the most important improvements introduced in Java 8 and further enhanced till Java 21. If you are preparing for Java interview questions or working on real-world projects, understanding the modern Java Date Time API is a must.

In this video, we explore why the old classes like java.util.Date, Calendar, and SimpleDateFormat were problematic and how the new API in the java.time package solves those issues. The legacy API was mutable, confusing, not thread-safe, and often caused off-by-one errors (like months starting from zero). With the modern API, Java provides immutable, thread-safe, and much more readable classes like LocalDate, LocalTime, LocalDateTime, and ZonedDateTime.

We will cover:

Problems with the legacy Date and Calendar API

Mutability issues and thread safety problems

Clear separation of concerns in the new API

How LocalDate, LocalTime, and LocalDateTime make coding easier

Formatting and parsing dates safely with DateTimeFormatter

Time zone support with ZonedDateTime

Practical examples: getting today’s date, adding days, parsing strings into dates, and formatting output

By the end of this video, you’ll clearly understand why the modern Java Date Time API is recommended for all applications, especially when building global, multi-threaded, or enterprise systems.

This video is not only useful for day-to-day development but also extremely valuable for cracking Java interview questions. Many companies still ask about the difference between Date/Calendar and the java.time API in interviews, especially for experienced developers.

If you are revising Java or preparing for interviews, make sure you watch till the end.

Mock Interview Playlist:
   • Mock Interviews (Face to Face)

Most Asked Core Java Interview Questions and Answers:    • Core Java frequently asked Interview Quest...

Advance Java Interview Questions and Answers:    • Advance Java Interview Questions

Java 8 Interview Questions and Answers:
   • Java 8 Interview Questions(New Features)

Hibernate Interview Questions and Answers:
   • Hibernate Interview Questions Java

Spring Boot Interview Questions and Answers:
   • Advance Java Interview Questions

Angular Playlist:
   • Angular Course Introduction || Angular 8
SQL Playlist:    • SQL Interview Questions and Answers

GIT:    • GIT

Subscriber and Follow Code Decode
Subscriber Code Decode: https://www.youtube.com/c/CodeDecode?...
LinkedIn :   / codedecodeyoutube
Instagram:   / codedecode25

#datetime #codedecode #interviewquestions

On this page of the site you can watch the video online All About Java 8+ Date Time API in 2025 | Interview Question & Answer for Experienced | Code Decode with a duration of hours minute second in good quality, which was uploaded by the user Code Decode 11 September 2025, share the link with friends and acquaintances, this video has already been watched 4,189 times on youtube and it was liked by 91 viewers. Enjoy your viewing!

3,475