WordFilter.java

package edu.odu.cs.cs350;

import java.util.Set;

/**
 * Class to test a String against a list of common words.
 */
public class WordFilter {
    /**
     * Optional set of English stop words to ignore during processing.
     */
    private static final Set<String> STOP_WORDS = Set.of(
        "a","about","above","after","again","against","all","am","an","and","any","are","aren't",
        "as","at","be","because","been","before","being","below","between","both","but","by",
        "could","couldn't","did","didn't","do","does","doesn't","doing","don't","down","during",
        "each","few","for","from","further","had","hadn't","has","hasn't","have","haven't","having",
        "he","he'd","he'll","he's","her","here","here's","hers","herself","him","himself","his",
        "how","how's","i","i'd","i'll","i'm","i've","if","in","into","is","isn't","it","it's","its",
        "itself","let's","me","more","most","mustn't","my","myself","no","nor","not","of","off","on",
        "once","only","or","other","ought","our","ours","ourselves","out","over","own","same","shan't",
        "she","she'd","she'll","she's","should","shouldn't","so","some","such","than","that","that's",
        "the","their","theirs","them","themselves","then","there","there's","these","they","they'd",
        "they'll","they're","they've","this","those","through","to","too","under","until","up","very",
        "was","wasn't","we","we'd","we'll","we're","we've","were","weren't","what","what's","when",
        "when's","where","where's","which","while","who","who's","whom","why","why's","with","won't",
        "would","wouldn't","you","you'd","you'll","you're","you've","your","yours","yourself",
        "yourselves"
    );

    /**
     * Check if a word is in the stop word list.
     * @param word the word to check
     * @return true if the word is a stop word, false otherwise
     */
    public static boolean contains(String word) {
        return STOP_WORDS.contains(word.toLowerCase());
    }
}