Java 17 Optional Chaining

https://stackoverflow.com/questions/74467465
Suppose you have an Optional and you want to consume the Optional multiple times You could now save the Optional to a variable and then use ifPresent two times on it

https://tomgregory.com/gradle/java-optional
1 What actually is Optional 2 What problem does Optional solve 3 How to use Optional to return an empty value 4 How to handle an Optional returned by a

https://www.baeldung.com/java-optional-uses
The Optional class provides useful methods to help us work with that API The important ones for this article are the of orElse and empty methods of T

https://docs.oracle.com/en/java/javase/17/docs/api/...
This method can be used to transform a Stream of optional integers to an IntStream of present integers Stream os IntStream s

https://docs.oracle.com/en/java/javase/17/docs/api/...
Returns an Optional describing the given value if non null otherwise returns an empty Optional Optional T Optional or Supplier

https://www.geeksforgeeks.org/method-chaining-in...
Method chaining in Java is a common syntax to invoke multiple methods calls in OOPs Each method in chaining returns an object It violates the need for

https://www.baeldung.com/java-monads
We ll learn about the essential methods enabling us to chain monads and operations map and flatMap Throughout the article we ll explore the APIs of a few

https://dev.to/rdrahuldhiman/what-is-optional...
This is how we can make use of optional chaining operators while working with array or object methods The key point to remember Optional chaining operator only checks for null or undefined not all falsy types Optional chaining operator evaluates the property preceding the operator not the one present after operator eg person address city

https://developer.mozilla.org/.../Optional_chaining
The optional chaining operator accesses an object s property or calls a function If the object accessed or function called using this operator is undefined or null the expression short circuits and evaluates to undefined instead of throwing an error