This tutorial introduces the difference between classes and interfaces, then guides you through examples demonstrating how to declare, implement, and extend Java interfaces.

Learn about serialization in Java with our comprehensive tutorial. We provide examples to help you understand how serialization works.

Create packages, import packaged classes and interfaces into your programs, move packages, and encapsulate them in jar files.

Here’s an example of how a Function and lambda expression work together: Function<Integer, String> verboseLambda = (Integer x)-> { return Integer. toString (x*x); }; System.

Do you need an example of how to use Java's UnaryOperator in a functional Lambda expression? This tutorial shows you where when and how to use the UnaryOperator interface in a function.