However, there is one minor complexity the Java Scanner class add into the software development mix. In order to use the Java Scanner class in your code, you must either fully reference the java.util ...

Importing classes. Java itself also takes full advantage of this modular approach by allowing you to import additional classes and reference additional methods when you want extra functionality ...

Create packages, import packaged classes and interfaces into your programs, ... As a result, you don’t need to specify import java.lang.*; (although you can do so, if desired).