Optional Java

https://www.geeksforgeeks.org/java-8-optional-class
The of method of java util Optional class in Java is used to get an instance of this Optional class with the specified value of the specified type Syntax public static lt T gt Optional lt T gt of T value Parameters This method accepts value as parameter of type T to create an Optional instance with this value

https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html
Indicates whether some other object is equal to this Optional The other object is considered equal if it is also an Optional and both instances have no value present or the present values are equal to each other via equals

https://www.baeldung.com/java-optional-uses
As per the Java 11 documentation the purpose of Optional is to provide a return type that can represent the absence of value in scenarios where returning null might cause unexpected errors like the infamous NullPointerException

https://www.javatpoint.com/java-8-optional
Java introduced a new class Optional in jdk8 It is a public final class and used to deal with NullPointerException in Java application You must import java util package to use this class It provides methods which are used to check the

https://docs.oracle.com/.../java/util/Optional.html
Optional is primarily intended for use as a method return type where there is a clear need to represent no result and where using null is likely to cause errors A variable whose type is Optional should never itself be null it should always point to

https://howtodoinjava.com/java8/java-8-optionals...
Java Optional is a way of replacing a nullable T reference with a non null value An Optional may either contain a non null T reference in which case we say the value is present or it may contain nothing in which case we say the value is absent

https://stackabuse.com/guide-to-optional-in-java-8
The Optional class was introduced in Java 8 to fix many of the issues with null references In this article we ll dive into the class how it s used and improve code with Optionals

https://docs.oracle.com/javase/8/docs/api/?java/util/Optional.html
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https://www.oracle.com/.../java/java8-optional.html
Java SE 8 introduces a new class called java util Optional that is inspired from the ideas of Haskell and Scala It is a class that encapsulates an optional value as illustrated in Listing 2 below and in Figure 1