CardReader.java Source code

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Here is the source code for CardReader.java

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/* From http://java.sun.com/docs/books/tutorial/index.html */

/*
 * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * -Redistribution of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 *
 * -Redistribution in binary form must reproduce the above copyright notice,
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 *
 * Neither the name of Sun Microsystems, Inc. or the names of contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that this software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
 * nuclear facility.
 */
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class CardReader {
    public static void main(String[] args) {
        Card3 card = new Card3(12, Card3.SPADES);
        System.out.println("Card to write is: " + card);

        try {
            FileOutputStream out = new FileOutputStream("card.out");
            ObjectOutputStream oos = new ObjectOutputStream(out);
            oos.writeObject(card);
            oos.flush();
        } catch (Exception e) {
            System.out.println("Problem serializing: " + e);
        }

        Card3 acard = null;

        try {
            FileInputStream in = new FileInputStream("card.out");
            ObjectInputStream ois = new ObjectInputStream(in);
            acard = (Card3) (ois.readObject());
        } catch (Exception e) {
            System.out.println("Problem serializing: " + e);
        }

        System.out.println("Card read is: " + acard);

    }
}

class Card3 implements Serializable {
    private int suit = UNASSIGNED;

    private int number = UNASSIGNED;

    public final static int UNASSIGNED = -1;

    public final static int DIAMONDS = 1;

    public final static int CLUBS = 2;

    public final static int HEARTS = 3;

    public final static int SPADES = 4;

    public final static int ACE = 1;

    public final static int KING = 13;

    public Card3(int number, int suit) {
        if (isValidNumber(number)) {
            this.number = number;
        } else {
            //Error
        }

        if (isValidSuit(suit)) {
            this.suit = suit;
        } else {
            //Error
        }
    }

    public int getSuit() {
        return suit;
    }

    public int getNumber() {
        return number;
    }

    public static boolean isValidNumber(int number) {
        if (number >= ACE && number <= KING) {
            return true;
        } else {
            return false;
        }
    }

    public static boolean isValidSuit(int suit) {
        if (suit >= DIAMONDS && suit <= SPADES) {
            return true;
        } else {
            return false;
        }
    }

    public boolean equals(Object obj) {
        if (obj instanceof Card3) {
            Card3 card = (Card3) obj;
            if (card.getNumber() == this.number && card.getSuit() == this.suit) {
                return true;
            } else {
                return false;
            }
        } else {
            return false;
        }
    }

    public int hashCode() {
        return number * suit;
    }

    public String toString() {
        return numberToString(this.number) + " of " + suitToString(this.suit);
    }

    public static String numberToString(int number) {
        String result = "";
        switch (number) {
        case ACE:
            result = "Ace";
            break;
        case 2:
            result = "Two";
            break;
        case 3:
            result = "Three";
            break;
        case 4:
            result = "Four";
            break;
        case 5:
            result = "Five";
            break;
        case 6:
            result = "Six";
            break;
        case 7:
            result = "Seven";
            break;
        case 8:
            result = "Eight";
            break;
        case 9:
            result = "Nine";
            break;
        case 10:
            result = "Ten";
            break;
        case 11:
            result = "Jack";
            break;
        case 12:
            result = "Queen";
            break;
        case KING:
            result = "King";
            break;
        case UNASSIGNED:
            result = "Invalid Number";
            break;
        }
        return result;
    }

    public static String suitToString(int suit) {
        String result = "";
        switch (suit) {
        case DIAMONDS:
            result = "Diamonds";
            break;
        case CLUBS:
            result = "Clubs";
            break;
        case HEARTS:
            result = "Hearts";
            break;
        case SPADES:
            result = "Spades";
            break;
        case UNASSIGNED:
            result = "Invalid Suit";
            break;
        }
        return result;
    }
}