CommandWords Tugas 6

/**
 * This class holds an enumeration of all command words
 * known to the game.
 * It is used to recognise commands as they are typed
 * in.
 *
 * @author Muhammad Naufaldillah
 * @version 24 November 2020
 */
public class CommandWords
{
    //a constant array that holds all valid command words
    private static final String validCommands[] =
    {
        "go", "quit", "help", "look"
    };

    /**
     * Constructor - initialise the command words.
     */
    public CommandWords()
    {

    }

    /**
     * Check whether a given String is a valid command
     * word.
     * Return true if it is, false if it isn't.
     */
    public boolean isCommand(String aString)
    {
        for(int i = 0; i < validCommands.length; i++)
        {
            if(validCommands[i].equals(aString))
            {
                return true;
            }
        }
        // if we get here, the string was not found in the commands
        return false;
    }
}