Class Directory

java.lang.Object
  Directory

public class Directory

extends Object

Directory of TextFiles.

Version:

4

Constructor Summary

Directory()
Construct a Directory.

Method Summary

void	addTextFile(String name, TextFile afile) Add a TextFile to this Directory.
String[]	getFileNames() Get the contents of this Directory as an array of the file names, each of which is a String.
int	getSize() The size of a directory is the number of TextFiles it contains.
static void	main(String[] args) main, for unit testing.
TextFile	retrieveTextFile(String filename) Get a TextFile in this Directory, by name .

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Directory

public Directory()

Construct a Directory.

Method Detail

addTextFile

public void addTextFile(String name,
                        TextFile afile)

Add a TextFile to this Directory. Overwrite if a TextFile of that name already exists.

Parameters:

name - the name under which this TextFile is added.

afile - the TextFile to add.

getFileNames

public String[] getFileNames()

Get the contents of this Directory as an array of the file names, each of which is a String.

Returns:

the array of names.

getSize

public int getSize()

The size of a directory is the number of TextFiles it contains.

Returns:

the number of TextFiles.

main

public static void main(String[] args)

main, for unit testing. The command

   java Directory
 

should produce output

 bill     17      Sun Jan 06 19:40:13 EST 2003    diary
 eb       12      Sun Jan 06 19:40:13 EST 2003    greeting
 

(with current dates, of course).

retrieveTextFile

public TextFile retrieveTextFile(String filename)

Get a TextFile in this Directory, by name .

Parameters:

filename - the name of the TextFile to find.

Returns:

the TextFile found, null if none.