/**
 * WordGameDictionary.java
 * Jeff Ondich, Carleton College, 2014-01-01
 *
 * An interface representing a string list of the sort used by word games
 * (e.g. Words With Friends, Boggle, etc.) to determine which strings are
 * legal words.
 *
 * This interface is part of an introduction to Java interfaces in
 * Carleton's CS 201 Data Structures course.
 */

public interface WordGameDictionary {
    /**
     * Add a word to this WordGameDictionary, so that future calls to hasWord
     * will return true for this word. If the word is already contained
     * in the WordGameDictionary, the word is not added.
     * @param word the word to add
     */
    public void addWord(String word);

    /**
     * @return true if the specified word is in this WordGameDictionary, and
     * false otherwise. Comparisons are made case-insensitively.
     * @param word the word to look up.
     */
    public boolean hasWord(String word);
}