Create ObjectInputStream out of FileInputStream : ObjectInputStream « File Input Output « Java

1. Java
2. File Input Output
3. ObjectInputStream

Create ObjectInputStream out of FileInputStream

  
/*
 * Copyright (c) 1995 - 2008 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:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions 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 nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.io.FileInputStream;
import java.io.ObjectInputStream;
import java.io.Serializable;

public class CardReader {
  public static void main(String[] args) {
    Card3 card = null;

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

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

  }
}

/*
 * Copyright (c) 1995 - 2008 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:
 *  - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *  - Redistributions 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 nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

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;
  }
}

   
    
  

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