NGram Frequency Builder

ATU - Higher Diploma - Software Development - OOP Project Work

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*This application parses the .txt files in a given directory, counts the frequencies of n-grams within, and ouputs them to a text file in CSV format. *

Compiling Note

To compile successfully, use javac ie/atu/sw/FileName.java from the src folder Executable .class files are saved in same location.

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Class Descriptions

Runner.java

This class is the entry to the application (containing the main method) and should be run to start it.

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Menu.java

• This class provides the UI to the console for the user to interact and select option as provided in the starter code.

State

• s - Scanner object
• p - Parser object for access to Parser.java functionality

Methods

• start() - initialises menu and deals with user inputs, called from Runner.java
• showOptions() - prints options to console

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Parser.java

• This class contains the functionality of the application, it parses files, processes them, and outputs the results.

State

• freqTable - multi-dimensional object array which stores frequencies of nGrams
• nGramSize - stores the size of nGrams to be processed, set by user
• inputDirPath - stores the path to the directory for processign as set by user
• outPutName - stores the name of the outout file as set by user

Methods

For brevity, getter & setter methods are not listed below:

• Parser() - constructor method initialises the size of the freqTable array
• executeNGramBuilder() - primary function to begin process, called from Menu
• printTable() - outputs results to file
• addNGram() - Add n-gram to freqTable
• processFile() - read files and process them to nGrams
• parseDirectory() - parses each file a given directory
• makeNGrams() - makes n-grams and saves them