With the growing demand for writing non-blocking code, we need ways to execute the code asynchronously. Asynchronous programming has the ability to improve the overall throughput on a multi-core system. Asynchronous programming is a programming paradigm that facilitates fast and responsive user interfaces. The asynchronous programming model in Java provides a consistent programming model to write programs that support asynchrony. In this webinar, Java expert - Jasmine Kaur discusses the best practices that should be followed while writing code to perform asynchronous operations in Java

1. Asynchronous
Programming
in Java
Presented By: Jasmine Kaur
Software Consultant
Knoldus Inc.(Singapore)

2. About Knoldus
Knoldus is a technology consulting firm with focus on modernizing the digital systems
at the pace your business demands.
DevOps
Functional. Reactive. Cloud Native

3. 01 Why Asynchronous
Programming
02 Completable Futures in
Java
03 How to run process in
Completable Futures
04 Amazing Features of
Completable Futures
05 Exceptions
Our Agenda

4. WHY
ASYNCHRONOUS
PROGRAMMING???

5. LET’s BEGIN WITH
FUTURES !

6. LET’s CHEAT
Javascript : Promises

7. Java’s CompletableFuture
=
Javascript’s Promises

8. Completable Futures in Java
CompletableFuture implements 2 interfaces
namely:
● Future
● Completion Stage

9. How to Run Process in
CompletableFuture?
● runAsync()
● supplyAsync()

10. How to Run Process in
CompletableFuture?
● Attaching a callable method
● Combining 2 CompletableFutures together
● Combining multiple CompletableFutures
● Exceptions

13. Attaching a callback method
Types of callback methods:
● thenRun()
● thenAccept()
● thenApply()

14. Combining 2
CompletableFutures together
● thenCompose()
● thenAcceptBoth()
● thenCombine()

15. Combining multiple
CompletableFutures together
● allOf()
● anyOf()

16. Exception Handling
● Handle exceptions using exceptionally() callback

17. DEMO

18. 01
References
● https://blog.knoldus.com/2018/01/20/future-vs-completablefuture-1/
● https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html
● https://www.callicoder.com/java-8-completablefuture-tutorial/
● http://www.baeldung.com/java-completablefuture
● https://www.youtube.com/watch?v=IwJ-SCfXoAU

19. Thank You!
jasmine.kaur@knoldus.com
https://www.linkedin.com/in/jasmine-k
aur-033021102/