# Uses of Class
java.lang.Package

Packages that use Package
Package
Description
java.lang
Provides classes that are fundamental to the design of the Java programming language.
java.net
Provides the classes for implementing networking applications.

## Uses of Package in java.lang

Methods in java.lang that return Package
Modifier and Type
Method
Description
`protected Package`
ClassLoader.`definePackage​(String name, String specTitle, String specVersion, String specVendor, String implTitle, String implVersion, String implVendor, URL sealBase)`
Defines a package by name in this `ClassLoader`.
`Package`
ClassLoader.`getDefinedPackage​(String name)`
Returns a `Package` of the given name that has been defined by this class loader.
`Package[]`
ClassLoader.`getDefinedPackages()`
Returns all of the `Package`s that have been defined by this class loader.
`Package`
Class.`getPackage()`
Gets the package of this class.
`protected Package`
ClassLoader.`getPackage​(String name)`
Deprecated.
If multiple class loaders delegate to each other and define classes with the same package name, and one such loader relies on the lookup behavior of `getPackage` to return a `Package` from a parent loader, then the properties exposed by the `Package` may not be as expected in the rest of the program.
`static Package`
Package.`getPackage​(String name)`
Deprecated.
If multiple class loaders delegate to each other and define classes with the same package name, and one such loader relies on the lookup behavior of `getPackage` to return a `Package` from a parent loader, then the properties exposed by the `Package` may not be as expected in the rest of the program.
`protected Package[]`
ClassLoader.`getPackages()`
Returns all of the `Package`s that have been defined by this class loader and its ancestors.
`static Package[]`
Package.`getPackages()`
Returns all of the `Package`s defined by the caller's class loader and its ancestors.

## Uses of Package in java.net

Methods in java.net that return Package
Modifier and Type
Method
Description
`protected Package`
URLClassLoader.`definePackage​(String name, Manifest man, URL url)`
Defines a new package by name in this `URLClassLoader`.