Final answer:
A package is a way to organize related classes and interfaces in Java, while a library is a collection of pre-compiled code that provides additional functionality. An example of a package is java.util, which provides utility functions for working with collections and dates.
Step-by-step explanation:
In Java, a package is a way to organize related classes and interfaces. It helps to keep code modular and organized. A package is a directory that contains Java classes and interfaces, and it can also contain sub-packages.
A library, on the other hand, is a collection of pre-compiled code that provides a set of functions and classes that can be used by other programs. Java libraries are commonly used to extend the functionality of the Java programming language.
For example, the java.util package in Java is a library that provides classes and interfaces for working with collections, dates, and other utility functions.