Imports

To enable classes, objects, interfaces, and functions to be used outside of the declared package, we must first import them. We do this using the import keyword, and then listing the class, object, interface, or function to be imported:

    import com.packt.myproject.Foo 

In the preceding example, the Foo class was imported from the com.packt.myproject package.

Wildcard imports

If we have a bunch of imports from the same package, then to avoid specifying each import individually, we can import the entire package at once using the * operator.

If we have several imports from the same package, then to avoid listing each import on a single line, all the classes and interfaces from a package can be imported at once. This...