Java - Optional Class Tutorial with Example

Notes on how to use the Optional class in Java

0:00 Introduction
0:17 Goodbye null checks!
0:56 Replacing null check with Optional
1:45 With Optional Lambdas
2:37 Another Example
5:07 When not to use Optional?
6:14 When to use Optional? - THUMB RULE
7:12 Summary Time

Key Ideas:
Wrap classes with Optional.
This wrapping unlocks streams functionality.
Use ifPresent instead of isPresent.

Oracle article link:

[sudhanshushukla]

Nicely explain, plz upload more on java 8