Java packages

Question

Hi all,

I need some help with importing packages in Java. Are the custom packages used more often than the built ones? I've heard that they can even substitute the last ones.
Also, I have some doubts regarding java.util.* - if it can import all the classes in the package or the separate ones only?

Thank you for all the ideas in advance.

Comments

When we use a * with the import, we can refer to any class that lies under that package. No need to import them individually if you have imported via a *