Example usage for java.io ObjectOutputStream writeObject

List of usage examples for java.io ObjectOutputStream writeObject

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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:Employee.java

public static void main(String[] args) throws Exception {
    Employee e1 = new Employee("A", 45000.0);
    System.out.println(e1.getName() + " " + e1.getSalary());

    FileOutputStream fos = new FileOutputStream("employee.ser");
    ObjectOutputStream oos = new ObjectOutputStream(fos);
    oos.writeObject(e1);

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

    Employee e2 = (Employee) ois.readObject();
    System.out.println(e2.getName() + " " + e2.getSalary());

}

From source file:MainClass.java

public static void main(String[] args) {
    Employee e = new Employee();
    e.name = "Jor Lee";
    e.address = "USA";
    e.SSN = 11122333;/*  ww  w  .  j  a v a  2 s  .co  m*/
    e.number = 101;

    try {
        FileOutputStream fileOut = new FileOutputStream("employee.ser");
        ObjectOutputStream out = new ObjectOutputStream(fileOut);

        out.writeObject(e);

        out.close();
        fileOut.close();
    } catch (IOException i) {
        i.printStackTrace();
    }
}

From source file:MainClass.java

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

    KeyGenerator keyGen = KeyGenerator.getInstance("DES");
    SecureRandom random = SecureRandom.getInstance("SHA1PRNG", "SUN");
    random.setSeed(101L);/*w  ww . j a v  a  2  s  .  c  o  m*/
    keyGen.init(56, random);
    SecretKey sKey = keyGen.generateKey();
    SecretKeyFactory kfactory = SecretKeyFactory.getInstance("DES");

    DESKeySpec kspec = (DESKeySpec) kfactory.getKeySpec(sKey, DESKeySpec.class);

    System.out.println(sKey);
    FileOutputStream fos = new FileOutputStream("secretKeys");
    ObjectOutputStream oos = new ObjectOutputStream(fos);

    oos.writeObject(kspec.getKey());

    FileInputStream fin = new FileInputStream("secretKeys");
    ObjectInputStream ois = new ObjectInputStream(fin);

    byte[] kMaterial = (byte[]) ois.readObject();

    DESKeySpec keyspec = new DESKeySpec(kMaterial);
    SecretKey newKey = kfactory.generateSecret(keyspec);
    System.out.println(newKey);
    System.out.println("Do the keys equal :" + newKey.equals(sKey));

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    oout.writeObject(new Example());
    oout.flush();//from w ww  .j ava2 s .  com
    oout.close();

    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    Example a = (Example) ois.readObject();

    System.out.println(a.s);

    a.validateObject();
    ois.close();
}

From source file:Main.java

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

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

    oout.writeObject(new Example());
    oout.flush();/* ww w  .j a v  a2  s .c o  m*/
    oout.close();

    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    Example a = (Example) ois.readObject();

    System.out.println(a.isDefault);

    System.out.println(a.string);

    ois.close();
}

From source file:ObjServer.java

public static void main(String args[]) throws Exception {
    ServerSocket ssock = new ServerSocket(1234);
    Hashtable hash = new Hashtable();
    hash.put("Java Source and Support", "www.java2s.com");

    while (true) {
        System.out.println("Listening");
        Socket sock = ssock.accept();

        ObjectOutputStream ostream = new ObjectOutputStream(sock.getOutputStream());
        ostream.writeObject(hash);
        ostream.close();/*from  ww  w.java  2  s. com*/
        sock.close();
    }
}

From source file:ID.java

public static void main(String[] args) throws IOException, ClassNotFoundException {
    ID id = new ID();
    List employees = new ArrayList();
    employees.add(new Employee("A", id));
    employees.add(new Employee("B", id));
    employees.add(new Employee("C", id));
    System.out.println("employees: " + employees);
    ByteArrayOutputStream buf1 = new ByteArrayOutputStream();
    ObjectOutputStream o1 = new ObjectOutputStream(buf1);
    o1.writeObject(employees);
    o1.writeObject(employees);/*from   w ww . j ava 2 s. c o m*/

    ByteArrayOutputStream buf2 = new ByteArrayOutputStream();
    ObjectOutputStream o2 = new ObjectOutputStream(buf2);
    o2.writeObject(employees);

    ObjectInputStream in1 = new ObjectInputStream(new ByteArrayInputStream(buf1.toByteArray()));
    ObjectInputStream in2 = new ObjectInputStream(new ByteArrayInputStream(buf2.toByteArray()));
    List emp1 = (List) in1.readObject(), emp2 = (List) in1.readObject(), emp3 = (List) in2.readObject();
    System.out.println("emp1: " + emp1);
    System.out.println("emp2: " + emp2);
    System.out.println("emp3: " + emp3);
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    String URL = "jdbc:odbc:dbname";
    Connection dbConn = DriverManager.getConnection(URL, "user", "passw");
    Employee employee = new Employee(42, "AA", 9);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(baos);
    oos.writeObject(employee);
    byte[] employeeAsBytes = baos.toByteArray();
    PreparedStatement pstmt = dbConn.prepareStatement("INSERT INTO EMPLOYEE (emp) VALUES(?)");
    ByteArrayInputStream bais = new ByteArrayInputStream(employeeAsBytes);
    pstmt.setBinaryStream(1, bais, employeeAsBytes.length);
    pstmt.executeUpdate();/*from ww w. j av a 2 s .  c  o m*/
    pstmt.close();
    Statement stmt = dbConn.createStatement();
    ResultSet rs = stmt.executeQuery("SELECT emp FROM Employee");
    while (rs.next()) {
        byte[] st = (byte[]) rs.getObject(1);
        ByteArrayInputStream baip = new ByteArrayInputStream(st);
        ObjectInputStream ois = new ObjectInputStream(baip);
        Employee emp = (Employee) ois.readObject();
    }
    stmt.close();
    rs.close();
    dbConn.close();
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    KeyGenerator kg = KeyGenerator.getInstance("DES");
    kg.init(new SecureRandom());
    SecretKey key = kg.generateKey();
    SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
    Class spec = Class.forName("javax.crypto.spec.DESKeySpec");
    DESKeySpec ks = (DESKeySpec) skf.getKeySpec(key, spec);
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("keyfile"));
    oos.writeObject(ks.getKey());

    Cipher c = Cipher.getInstance("DES/CFB8/NoPadding");
    c.init(Cipher.ENCRYPT_MODE, key);
    CipherOutputStream cos = new CipherOutputStream(new FileOutputStream("ciphertext"), c);
    PrintWriter pw = new PrintWriter(new OutputStreamWriter(cos));
    pw.println("Stand and unfold yourself");
    pw.close();//from  w  w  w .  j av a2 s . co  m
    oos.writeObject(c.getIV());
    oos.close();
}

From source file:House.java

public static void main(String[] args) throws IOException, ClassNotFoundException {
    House house = new House();
    List animals = new ArrayList();
    animals.add(new Animal("Bosco the dog", house));
    animals.add(new Animal("Ralph the hamster", house));
    animals.add(new Animal("Fronk the cat", house));
    System.out.println("animals: " + animals);
    ByteArrayOutputStream buf1 = new ByteArrayOutputStream();
    ObjectOutputStream o1 = new ObjectOutputStream(buf1);
    o1.writeObject(animals);
    o1.writeObject(animals); // Write a 2nd set
    // Write to a different stream:
    ByteArrayOutputStream buf2 = new ByteArrayOutputStream();
    ObjectOutputStream o2 = new ObjectOutputStream(buf2);
    o2.writeObject(animals);//ww  w.j  a v  a 2  s .  c om
    // Now get them back:
    ObjectInputStream in1 = new ObjectInputStream(new ByteArrayInputStream(buf1.toByteArray()));
    ObjectInputStream in2 = new ObjectInputStream(new ByteArrayInputStream(buf2.toByteArray()));
    List animals1 = (List) in1.readObject(), animals2 = (List) in1.readObject(),
            animals3 = (List) in2.readObject();
    System.out.println("animals1: " + animals1);
    System.out.println("animals2: " + animals2);
    System.out.println("animals3: " + animals3);
}