Too Long; Didn't Read
Method reference operator `::` is used to refer to the methods of functional interface. It is a compact and easy form of the Lambda expression. Method references are compact each-to-read expressions for methods that already have a name. They’re often used to create simple Lambda expressions by referring to existing methods. Method reference syntaxes are clean and simple. We will discuss the different kinds of method references and code in the Java 8 stream API. We can use them to replace the lambda expressions using method references in Java 8.