Overview One of the biggest questions I have when studying the functional interfaces in java.util.function is why the creators made DoubleConsumer (LongConsumer, IntConsumer) while there is already a Consumer interface that can handle any kind of object. It turned out, they have solid reason to do so. Boxing, unboxing, autoboxing primer As you may already … Read more
Overview In Java functional programming, Consumers are incredibly versatile and valuable, particularly when it comes to performing actions on data without returning values. Why use Consumers? Here are the main reasons using Consumers is beneficial to your code: Simplifying Side Effects You may hear or read somewhere that in functional programming, side effects should be … Read more
Overview The predicate interfaces in the java.util.function package return a boolean given one or some arguments. The primary purpose of the Predicate interface is to simplify the task of evaluating conditions or tests within your Java applications. It abstracts the process of writing conditional statements and allows you to represent complex conditions as reusable, composable … Read more
Overview Java BinaryOperator is a functional interface extending BiFunction. As you may recall, BiFunction has one abstract method called apply that accepts two arguments and returns a result. A BinaryOperator is a special case of a BiFuncion where the types of the arguments and the return value are the same. Thus, this is the signature … Read more
Overview In Java, A BiFunction represents a function that accepts two arguments and returns a result. The interface has one abstract method apply and one default method andThen. The apply method is defined as follows: That means it accepts two arguments (t of type T and u of type U) and returns an object of … Read more
Overview The BiConsumer is a part of the java.util.function package. As the name suggest, this interface is a Consumer. That means it takes input arguments and returns void. Practical use cases This interface can be useful in various cases, for example, it can be used to create side effects like modifying state, printing, or logging. … Read more