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syntactic unit > scoping unit > package

package
subject			fact

package	can be imported
	can be imported by using the import statement
	contains 0 or more classes and 0 or more interfaces
	defines a name space
	has definition A collection of related classes and interfaces that provides access protection and namespace management
	groups classes or interfaces by function
	has a name
	has purpose to avoid naming conflicts to control access
	has purpose to group together related classes into a subsystem
	is a subtopic of Packages
	is specified by a file that begins with a package statement
	is stored as a set of class files in a directory
	is a kind of scoping unit
	see also package name
	to create you put a class in it or put an interface in it by putting a package statement at the top of the source file in which the class or interface is defined
	to import you use the import statement with the asterisk wildcard character
syntactic unit	has syntax rule bold = mandatory italic = non-terminal normal font = optional

Kinds of package :

• default package (6 facts) - An unnamed package that contains class files whose source files did not contain a package statement
• java.applet (6 facts) - A package that contains applet classes
• java.awt (8 facts) - A package that contains GUI widget classes
• java.awt.event (6 facts)
• java.awt.swing (6 facts)
• java.io (7 facts) - A package that contains input and output classes
• java.lang (6 facts)
• java.util (5 facts)
• javax.swing (5 facts)

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