Java™ How To Program (Early Objects), Tenth Edition

DeckOfCards Constructor

The class’s constructor instantiates the deck array (line 20) with NUMBER_OF_CARDS (52) elements. The elements of deck are null by default, so the constructor uses a for statement (lines 24–26) to fill the deck with Cards. The loop initializes control variable count to 0 and loops while count is less than deck.length, causing count to take on each integer value from 0 to 51 (the indices of the deck array). Each Card is instantiated and initialized with two Strings—one from the faces array (which contains the Strings "Ace" through "King") and one from the suits array (which contains the Strings "Hearts", "Diamonds", "Clubs" and "Spades"). The calculation count % 13 always results in a value from 0 to 12 (the 13 indices ...