Built-in packages in Python

Three packages of Java Class Library are:

A package is a collection of similar types of Java entities such as classes, interfaces, subclasses, exceptions, errors, and enums . A package can also contain sub-packages.

As mentioned in the beginning of this guide that we have two types of packages in java. 1) User defined package: The package we create is called user-defined package. 2) Built-in package: The already defined package like java.io.

Package in Java is a mechanism to encapsulate a group of classes, sub packages and interfaces . Packages are used for: Preventing naming conflicts. For example there can be two classes with name Employee in two packages, college. staff.4 Mar 2022