Why do I need to import java.io.console? Need more explain... Are we import java.io.console in the previous class?

Whenever we want to access an object that is not included in our package (this will make more sense as you dive deeper into Java) we need to import it as shown in this example. This is basically a way of telling Java that we want to use functionality offered by one of the objects without actually going through the struggle of copying over its source classes to our workspace.

Real life example of this would be streaming services - modern gaming tablets offer service of streaming games from powerful PCs that we are accessing remotely. This means we can play recent releases with highest settings from comfort of our own sofa, without actually owning those gaming desktops. Same applies to importing classes - we are accessing their functionality without actually "owning" them.