Because usually you have an ide that manages imports for you automatically. So unless you are using a library that has multiple imports, usually you know the im

Because usually you have an ide that manages imports for you automatically. So unless you are using a library that has multiple imports, usually you know the import to include, and in almost all cases it is automatically included. Btw: in the compact example! The IO class is implicitly imported, so that example truly works without any import at all!