Write a function that takes an array of numbers as input and returns a new array with all the even numbers from the input array. Write a function that takes a string as input and returns the same ...

If you want to master functional programming, the best place to start is with the Java Function interface. This example will show you four different ways to implement this functional interface in your ...

Advanced Java Programming Questions Java 8 Features Write a program to demonstrate ... Use the Optional class to avoid NullPointerException. Demonstrate the use of Function and Predicate interfaces.

There are only half a dozen classes you really need to master to become competent in the world of functional programming. The java.util.function package contains well over 40 different components, but ...