Learn the differences between these Java language elements and how to use them in your programs. Abstract classes and interfaces are plentiful in Java code ... Here’s an example: public abstract ...

It allows you to write very clean and expressive code. This example also shows the flexibility of Java ... Using super with method references allows you to refer specifically to methods of a ...

If a function needs to both pass data into it and return data as a response, then use the Function interface, because it combines the capabilities of both the Consumer and Supplier interface. Before ...

As such, you can incorporate the functional Consumer interface into your code simply ... interface example implemented using a somewhat verbose lambda expression: The functional Consumer interface is ...