# Packages

A package is a namespace that mainly contains classes and interfaces. For instance, the standard class `ArrayList` is in the package `java.util`. For this class, `java.util.ArrayList` is called its fully qualified name because this syntax has no ambiguity. Classes in different packages can have the same name. For example, you have the two classes `java.util.Date` and `java.sql.Date`, which are different. If no package is declared in a class, its package is the default package.

To create package use this command -> javac -d directory javafilename

Visit the following resources to learn more:

- [Packages in Java](https://docs.oracle.com/javase/8/docs/api/java/lang/Package.html)
- [Java Package](https://www.javatpoint.com/package)
- [Packages In Java](https://www.geeksforgeeks.org/packages-in-java/)