This essay does not describe an existing computer program, just one that should exist. This essay is about a suggested student project in Java programming. This essay gives a rough overview of how it might work. I have no source, object, specifications, file layouts or anything else useful to implementing this project. Everything I have prepared to help you is right here.
This project outline is not like the artificial, tidy little problems you are spoon-fed in school, when all the facts you need are included, nothing extraneous is mentioned, the answer is fully specified, along with hints to nudge you toward a single expected canonical solution. This project is much more like the real world of messy problems where it is up to you to fully the define the end point, or a series of ever more difficult versions of this project and research the information yourself to solve them.
Everything I have to say to help you with this project is written below. I am not prepared to help you implement it; or give you any additional materials. I have too many other projects of my own.
Though I am a programmer by profession, I don’t do people’s homework for them. That just robs them of an education.
You have my full permission to implement this project in any way you please and to keep all the profits from your endeavour.
Please do not email me about this project without reading the disclaimer above.
The java.io package does not directly support wildcard filters. You have to implement the FilenameFilter interface and write an accept method that examines each filename and decides whether it should be included.
Writing even a simple wildcard filter is a bit of hassle. Have a look at this one that selects all files of the form ?gloss*.html :
Your job is to create a tool for creating FilenameFilter objects specifying only a list of positive and negative wildcards. For example you might use the only a list of positive and negative wildcards. For example you might use the tool like this:
FilenameFilter f = new WildCardFilter( "*.txt,*.doc,*.c*,-*.cnt" ); String filenames = new File ( "MyDir" ).list( f );
You process the wildcards in order using an algorithm something like this:
Ideas for speeding up the code:
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