Example usage for java.io ObjectInputStream readInt

Introduction

In this page you can find the example usage for java.io ObjectInputStream readInt.

Prototype

public int readInt() throws IOException 

Source Link

Document

Reads a 32 bit int.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {

    int i = 123456;

    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    // write something in the file
    oout.writeInt(i);//from w  w  w  .  j av  a 2 s  .c  o  m
    oout.writeInt(54321);
    oout.flush();
    oout.close();
    // create an ObjectInputStream for the file we created before
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    // read and print an int
    System.out.println(ois.readInt());

    // read and print an int
    System.out.println(ois.readInt());
    ois.close();
}

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From source file:TestCipher.java

public static void main(String args[]) throws Exception {
    Set set = new HashSet();
    Random random = new Random();
    for (int i = 0; i < 10; i++) {
        Point point = new Point(random.nextInt(1000), random.nextInt(2000));
        set.add(point);/*from   w ww .j  a v a2s  . c  o  m*/
    }
    int last = random.nextInt(5000);

    // Create Key
    byte key[] = password.getBytes();
    DESKeySpec desKeySpec = new DESKeySpec(key);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    SecretKey secretKey = keyFactory.generateSecret(desKeySpec);

    // Create Cipher
    Cipher desCipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
    desCipher.init(Cipher.ENCRYPT_MODE, secretKey);

    // Create stream
    FileOutputStream fos = new FileOutputStream("out.des");
    BufferedOutputStream bos = new BufferedOutputStream(fos);
    CipherOutputStream cos = new CipherOutputStream(bos, desCipher);
    ObjectOutputStream oos = new ObjectOutputStream(cos);

    // Write objects
    oos.writeObject(set);
    oos.writeInt(last);
    oos.flush();
    oos.close();

    // Change cipher mode
    desCipher.init(Cipher.DECRYPT_MODE, secretKey);

    // Create stream
    FileInputStream fis = new FileInputStream("out.des");
    BufferedInputStream bis = new BufferedInputStream(fis);
    CipherInputStream cis = new CipherInputStream(bis, desCipher);
    ObjectInputStream ois = new ObjectInputStream(cis);

    // Read objects
    Set set2 = (Set) ois.readObject();
    int last2 = ois.readInt();
    ois.close();

    // Compare original with what was read back
    int count = 0;
    if (set.equals(set2)) {
        System.out.println("Set1: " + set);
        System.out.println("Set2: " + set2);
        System.out.println("Sets are okay.");
        count++;
    }
    if (last == last2) {
        System.out.println("int1: " + last);
        System.out.println("int2: " + last2);
        System.out.println("ints are okay.");
        count++;
    }
    if (count != 2) {
        System.out.println("Problem during encryption/decryption");
    }
}

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From source file:Main.java

public static void main(String[] args) throws Exception {

    ObjectOutputStream out = new ObjectOutputStream(
            new BufferedOutputStream(new FileOutputStream("file.data")));

    out.writeObject(Calendar.getInstance());
    out.writeObject(new BigDecimal("123.123"));
    out.writeInt(1);/*from  w  w  w.  j a  v a  2 s  .co  m*/
    out.writeUTF("tutorial");
    out.close();

    ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(new FileInputStream("file.data")));

    BigDecimal price;
    int unit;
    String desc;

    Calendar date = (Calendar) in.readObject();
    System.out.println(date);

    price = (BigDecimal) in.readObject();
    unit = in.readInt();
    desc = in.readUTF();
    System.out.println(unit);
    System.out.println(desc);
    System.out.println(price);
    in.close();
}

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From source file:DataIOTest2.java

public static void main(String[] args) throws IOException {

    // write the data out
    ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("invoice1.txt"));

    double[] prices = { 19.99, 9.99, 15.99, 3.99, 4.99 };
    int[] units = { 12, 8, 13, 29, 50 };
    String[] descs = { "Java T-shirt", "Java Mug", "Duke Juggling Dolls", "Java Pin", "Java Key Chain" };

    for (int i = 0; i < prices.length; i++) {
        out.writeDouble(prices[i]);//from ww  w .  j  av a 2 s  .  c  o m
        out.writeChar('\t');
        out.writeInt(units[i]);
        out.writeChar('\t');
        out.writeChars(descs[i]);
        out.writeChar('\n');
    }
    out.close();

    // read it in again
    ObjectInputStream in = new ObjectInputStream(new FileInputStream("invoice1.txt"));

    double price;
    int unit;
    String desc;
    double total = 0.0;

    try {
        while (true) {
            price = in.readDouble();
            in.readChar(); // throws out the tab
            unit = in.readInt();
            in.readChar(); // throws out the tab
            desc = in.readLine();
            System.out.println("You've ordered " + unit + " units of " + desc + " at $" + price);
            total = total + unit * price;
        }
    } catch (EOFException e) {
    }
    System.out.println("For a TOTAL of: $" + total);
    in.close();
}

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From source file:ObjectStreams.java

public static void main(String[] args) throws IOException, ClassNotFoundException {

    ObjectOutputStream out = null;
    try {//from   w  w  w  . j  a  va2  s  . c o  m
        out = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(dataFile)));

        out.writeObject(Calendar.getInstance());
        for (int i = 0; i < prices.length; i++) {
            out.writeObject(prices[i]);
            out.writeInt(units[i]);
            out.writeUTF(descs[i]);
        }
    } finally {
        out.close();
    }

    ObjectInputStream in = null;
    try {
        in = new ObjectInputStream(new BufferedInputStream(new FileInputStream(dataFile)));

        Calendar date = null;
        BigDecimal price;
        int unit;
        String desc;
        BigDecimal total = new BigDecimal(0);

        date = (Calendar) in.readObject();

        System.out.format("On %tA, %<tB %<te, %<tY:%n", date);

        try {
            while (true) {
                price = (BigDecimal) in.readObject();
                unit = in.readInt();
                desc = in.readUTF();
                System.out.format("You ordered %d units of %s at $%.2f%n", unit, desc, price);
                total = total.add(price.multiply(new BigDecimal(unit)));
            }
        } catch (EOFException e) {
        }
        System.out.format("For a TOTAL of: $%.2f%n", total);
    } finally {
        in.close();
    }
}

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From source file:Shape.java

public static void deserializeStaticState(ObjectInputStream os) throws IOException {
    color = os.readInt();
}

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From source file:Main.java

public static void RestoreSharedPrefencesFromStream(ObjectInputStream input, Editor editor)
        throws IOException, ClassNotFoundException {
    int size = input.readInt();
    for (int i = 0; i < size; i++) {
        String key = input.readUTF();
        Object val = input.readObject();
        if (val instanceof Boolean)
            editor.putBoolean(key, ((Boolean) val).booleanValue());
        else if (val instanceof Float)
            editor.putFloat(key, ((Float) val).floatValue());
        else if (val instanceof Integer)
            editor.putInt(key, ((Integer) val).intValue());
        else if (val instanceof Long)
            editor.putLong(key, ((Long) val).longValue());
        else if (val instanceof String)
            editor.putString(key, ((String) val));
    }/*from   w  ww  . j  ava  2  s  . c  om*/
    editor.commit();
}

---

From source file:org.mrgeo.utils.Base64Utils.java

public static double[] decodeToDoubleArray(String encoded) throws IOException {
    byte[] objBytes = Base64.decodeBase64(encoded.getBytes());

    ByteArrayInputStream bais = null;
    ObjectInputStream ois = null;

    try {//from  w  w  w .  j  a  va2  s . c  o  m
        bais = new ByteArrayInputStream(objBytes);
        ois = new ObjectInputStream(bais);
        int arrayLength = ois.readInt();
        double result[] = new double[arrayLength];
        for (int i = 0; i < arrayLength; i++) {
            result[i] = ois.readDouble();
        }
        return result;
    } finally {
        if (ois != null) {
            ois.close();
        }
        if (bais != null) {
            bais.close();
        }
    }
}

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From source file:de.tud.cs.se.flashcards.persistence.Store.java

public static FlashcardSeries openSeries(File file) throws IOException {

    ObjectInputStream oin = null;
    try {/* w w w  .  j  av  a 2 s  . co m*/

        FlashcardSeries series = new FlashcardSeries();

        oin = new ObjectInputStream(new FileInputStream(file));
        int size = oin.readInt();
        for (int i = 0; i < size; i++) {
            series.addCard((Flashcard) oin.readObject());
        }

        return series;
    } catch (ClassNotFoundException e) {
        // the file did contain something unexpected...
        throw new IOException(e);
    } finally {
        if (oin != null)
            IOUtils.closeQuietly(oin);
    }
}

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From source file:tvbrowser.ui.filter.dlgs.FilterTreeModel.java

public static FilterTreeModel initInstance(ObjectInputStream in) throws IOException, ClassNotFoundException {
    int version = in.readInt();
    FilterNode rootNode = new FilterNode(in, version);
    fixRootNode(rootNode);//from  w  w w.j a  va 2s  .  c o m
    mInstance = new FilterTreeModel(rootNode);
    return mInstance;
}

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