Example usage for java.io ObjectOutputStream writeObject

Introduction

In this page you can find the example usage for java.io ObjectOutputStream writeObject.

Prototype

public final void writeObject(Object obj) throws IOException 

Source Link

Document

Write the specified object to the ObjectOutputStream.

Usage

From source file:Blip3.java

public static void main(String[] args) throws IOException, ClassNotFoundException {
    System.out.println("Constructing objects:");
    Blip3 b3 = new Blip3("A String ", 47);
    System.out.println(b3);//w  w w. jav  a  2 s. co m
    ObjectOutputStream o = new ObjectOutputStream(new FileOutputStream("Blip3.out"));
    System.out.println("Saving object:");
    o.writeObject(b3);
    o.close();
    // Now get it back:
    ObjectInputStream in = new ObjectInputStream(new FileInputStream("Blip3.out"));
    System.out.println("Recovering b3:");
    b3 = (Blip3) in.readObject();
    System.out.println(b3);
}

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From source file:MainClass.java

public static void main(String[] args) throws IOException, ClassNotFoundException {
    System.out.println("Constructing objects:");
    MyBean myBean = new MyBean("A String ", 47);
    System.out.println(myBean);/*from   w w w.j  ava 2 s. c  o  m*/
    ObjectOutputStream o = new ObjectOutputStream(new FileOutputStream("MyBean.out"));
    System.out.println("Saving object:");
    o.writeObject(myBean);
    o.close();

    ObjectInputStream in = new ObjectInputStream(new FileInputStream("MyBean.out"));
    System.out.println("Recovering:");
    myBean = (MyBean) in.readObject();
    System.out.println(myBean);
}

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From source file:MyClass.java

public static void main(String[] argv) throws Exception {
    double v[] = { 1.1, 2.2, 3.3 };
    double v2[] = { 9.0, 8.0, 7.7 };

    MyClass obj1 = new MyClass("This is a test", v, "Test.txt");
    MyClass obj2 = new MyClass("Alpha Beta Gamma", v2, "Sample.dat");

    ObjectOutputStream fout = new ObjectOutputStream(new FileOutputStream("obj.dat"));
    System.out.println("obj1:\n" + obj1);
    fout.writeObject(obj1);
    System.out.println("obj2:\n" + obj2);
    fout.writeObject(obj2);//from w  w  w.j  a va  2s.c  o  m
    fout.close();

    ObjectInputStream fin = new ObjectInputStream(new FileInputStream("obj.dat"));
    MyClass inputObj;

    inputObj = (MyClass) fin.readObject();
    System.out.println("First object:\n" + inputObj);

    inputObj = (MyClass) fin.readObject();
    System.out.println("Second object:\n" + inputObj);
    fin.close();
}

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From source file:Blip1.java

public static void main(String[] args) throws IOException, ClassNotFoundException {
    System.out.println("Constructing objects:");
    Blip1 b1 = new Blip1();
    Blip2 b2 = new Blip2();
    ObjectOutputStream o = new ObjectOutputStream(new FileOutputStream("Blips.out"));
    System.out.println("Saving objects:");
    o.writeObject(b1);
    o.writeObject(b2);/*from w w  w . j  a  v a2 s.  c  o  m*/
    o.close();
    // Now get them back:
    ObjectInputStream in = new ObjectInputStream(new FileInputStream("Blips.out"));
    System.out.println("Recovering b1:");
    b1 = (Blip1) in.readObject();
    // OOPS! Throws an exception:
    //! System.out.println("Recovering b2:");
    //! b2 = (Blip2)in.readObject();
}

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From source file:com.textocat.textokit.morph.opencorpora.resource.XmlDictionaryPSP.java

public static void main(String[] args) throws Exception {
    XmlDictionaryPSP cfg = new XmlDictionaryPSP();
    new JCommander(cfg, args);

    MorphDictionaryImpl dict = new MorphDictionaryImpl();
    DictionaryExtension ext = cfg.dictExtensionClass.newInstance();
    FileInputStream fis = FileUtils.openInputStream(cfg.dictXmlFile);
    try {/*from  ww  w.j  a  v a2  s . c o  m*/
        new XmlDictionaryParser(dict, ext, fis).run();
    } finally {
        IOUtils.closeQuietly(fis);
    }

    System.out.println("Preparing to serialization...");
    long timeBefore = currentTimeMillis();
    OutputStream fout = new BufferedOutputStream(FileUtils.openOutputStream(cfg.outputJarFile), 8192 * 8);
    Manifest manifest = new Manifest();
    manifest.getMainAttributes().putValue(Attributes.Name.MANIFEST_VERSION.toString(), "1.0");
    manifest.getMainAttributes().putValue(OpencorporaMorphDictionaryAPI.ME_OPENCORPORA_DICTIONARY_VERSION,
            dict.getVersion());
    manifest.getMainAttributes().putValue(OpencorporaMorphDictionaryAPI.ME_OPENCORPORA_DICTIONARY_REVISION,
            dict.getRevision());
    manifest.getMainAttributes().putValue(OpencorporaMorphDictionaryAPI.ME_OPENCORPORA_DICTIONARY_VARIANT,
            cfg.variant);
    String dictEntryName = String.format(
            OpencorporaMorphDictionaryAPI.FILENAME_PATTERN_OPENCORPORA_SERIALIZED_DICT, dict.getVersion(),
            dict.getRevision(), cfg.variant);
    JarOutputStream jarOut = new JarOutputStream(fout, manifest);
    jarOut.putNextEntry(new ZipEntry(dictEntryName));
    ObjectOutputStream serOut = new ObjectOutputStream(jarOut);
    try {
        serOut.writeObject(dict.getGramModel());
        serOut.writeObject(dict);
    } finally {
        serOut.flush();
        jarOut.closeEntry();
        serOut.close();
    }
    System.out.println(String.format("Serialization finished in %s ms.\nOutput size: %s bytes",
            currentTimeMillis() - timeBefore, cfg.outputJarFile.length()));
}

---

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Junk obj1 = new Junk("A");
    Junk obj2 = new Junk("B");
    Junk obj3 = new Junk("V");
    ObjectOutputStream objectOut = new ObjectOutputStream(
            new BufferedOutputStream(new FileOutputStream("C:/JunkObjects.bin")));

    objectOut.writeObject(obj1); // Write object
    objectOut.writeObject(obj2); // Write object
    objectOut.writeObject(obj3); // Write object
    objectOut.close(); // Close the output stream

    ObjectInputStream objectIn = null;
    int objectCount = 0;
    Junk object = null;/*from   ww  w  .ja va  2 s  .c  o m*/

    objectIn = new ObjectInputStream(new BufferedInputStream(new FileInputStream("C:/JunkObjects.bin")));

    // Read from the stream until we hit the end
    while (objectCount < 3) {
        object = (Junk) objectIn.readObject();
        objectCount++;
        System.out.println(object);
    }

    objectIn.close();

}

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From source file:Engine.java

public static void main(String[] args) throws Exception {
    Car c1 = new Car("Some car", 4, new Engine(6));

    ObjectOutputStream oos = null;

    FileOutputStream fos = new FileOutputStream("car.ser");
    oos = new ObjectOutputStream(fos);

    oos.writeObject(c1);
    ObjectInputStream ois = null;

    FileInputStream fis = new FileInputStream("car.ser");
    ois = new ObjectInputStream(fis);

    Car c2 = (Car) ois.readObject();//from   ww  w. ja v  a2 s  .  c o m

    System.out.println("Number of tires = " + c2.getNumTires());
    System.out.println("Number of cylinders = " + c2.getEngine().getNumCylinders());
    System.out.println("Name = " + c2.getName());
}

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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 w w.j a  v  a2  s.  co 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 {
    String WRITE_OBJECT_SQL = "BEGIN " + "  INSERT INTO java_objects(object_id, object_name, object_value) "
            + "  VALUES (?, ?, empty_blob()) " + "  RETURN object_value INTO ?; " + "END;";
    String READ_OBJECT_SQL = "SELECT object_value FROM java_objects WHERE object_id = ?";

    Connection conn = getOracleConnection();
    conn.setAutoCommit(false);/*from   ww w.  j ava2 s  .c  o  m*/
    List<Object> list = new ArrayList<Object>();
    list.add("This is a short string.");
    list.add(new Integer(1234));
    list.add(new java.util.Date());

    // write object to Oracle
    long id = 0001;
    String className = list.getClass().getName();
    CallableStatement cstmt = conn.prepareCall(WRITE_OBJECT_SQL);

    cstmt.setLong(1, id);
    cstmt.setString(2, className);

    cstmt.registerOutParameter(3, java.sql.Types.BLOB);

    cstmt.executeUpdate();
    BLOB blob = (BLOB) cstmt.getBlob(3);
    OutputStream os = blob.getBinaryOutputStream();
    ObjectOutputStream oop = new ObjectOutputStream(os);
    oop.writeObject(list);
    oop.flush();
    oop.close();
    os.close();

    // Read object from oracle
    PreparedStatement pstmt = conn.prepareStatement(READ_OBJECT_SQL);
    pstmt.setLong(1, id);
    ResultSet rs = pstmt.executeQuery();
    rs.next();
    InputStream is = rs.getBlob(1).getBinaryStream();
    ObjectInputStream oip = new ObjectInputStream(is);
    Object object = oip.readObject();
    className = object.getClass().getName();
    oip.close();
    is.close();
    rs.close();
    pstmt.close();
    conn.commit();

    // de-serialize list a java object from a given objectID
    List listFromDatabase = (List) object;
    System.out.println("[After De-Serialization] list=" + listFromDatabase);
    conn.close();
}

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From source file:AESTest.java

public static void main(String[] args) {
    try {//from  w w  w  .  ja v  a2 s  .  com
        if (args[0].equals("-genkey")) {
            KeyGenerator keygen = KeyGenerator.getInstance("AES");
            SecureRandom random = new SecureRandom();
            keygen.init(random);
            SecretKey key = keygen.generateKey();
            ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(args[1]));
            out.writeObject(key);
            out.close();
        } else {
            int mode;
            if (args[0].equals("-encrypt"))
                mode = Cipher.ENCRYPT_MODE;
            else
                mode = Cipher.DECRYPT_MODE;

            ObjectInputStream keyIn = new ObjectInputStream(new FileInputStream(args[3]));
            Key key = (Key) keyIn.readObject();
            keyIn.close();

            InputStream in = new FileInputStream(args[1]);
            OutputStream out = new FileOutputStream(args[2]);
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(mode, key);

            crypt(in, out, cipher);
            in.close();
            out.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
    } catch (GeneralSecurityException e) {
        e.printStackTrace();
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
}

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