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java.io
subjectfact 
java.iocontains input and output classesadded by: JK, source: Sun Java Tutorial, 2001-10-19 11:37:11.0
has definition A package that contains input and output classesadded by: JK, source: Sun Java Tutorial, reference: Source 2, 2001-10-19 11:37:11.0
has specification    2001-10-19 11:37:11.0
is a subtopic of Example Packages2001-10-19 11:37:11.0
is a subtopic of Input and Output2001-10-19 11:37:11.0
is an instance of packageadded by: JK, source: Sun Java Tutorial, 2001-10-19 11:37:11.0
must be imported when you are using file input or file output streamsadded by: JK, source: On To Java, 2001-10-19 11:37:11.0
packagecan be imported2001-10-19 11:37:38.0
can be imported by using the import statement    2001-10-19 11:37:38.0
defines a name space    2001-10-19 11:37:38.0
groups classes or interfaces by function2001-10-19 11:37:38.0
has purpose
  • to avoid naming conflicts
  • to control access
2001-10-19 11:37:38.0
has purpose to group together related classes into a subsystem    2001-10-19 11:37:38.0
is specified by a file that begins with a package statement2001-10-19 11:37:38.0
is stored as a set of class files in a directory2001-10-19 11:37:38.0
see also package name2001-10-19 11:37:38.0
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 defined2001-10-19 11:37:38.0
to import you use the import statement with the asterisk wildcard character2001-10-19 11:37:38.0
syntactic unithas syntax rule
bold = mandatory
italic = non-terminal
normal font = optional
2001-10-19 11:38:04.0

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