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.

Don't be intimidated by the prospect of doing functional programming in Java. This step-by-step example will help you learn basic Java lambda syntax quickly and effectively.

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

Packages can store classes and interfaces, as well as subpackages, which are packages nested within other packages. A package has a name, which must be a non-reserved identifier; for example, java.