Example usage for java.io ObjectInputStream readObject

Introduction

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

Prototype

public final Object readObject() throws IOException, ClassNotFoundException

Source Link

Document

Read an object from the ObjectInputStream.

Usage

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    String elements[] = { "I", "P", "E", "G", "P" };
    Set set = new HashSet(Arrays.asList(elements));
    Set set2 = ((Set) ((HashSet) set).clone());
    System.out.println(set2);/*from w  w w . j a va2s .com*/
    FileOutputStream fos = new FileOutputStream("set.ser");
    ObjectOutputStream oos = new ObjectOutputStream(fos);
    oos.writeObject(set);
    oos.close();
    FileInputStream fis = new FileInputStream("set.ser");
    ObjectInputStream ois = new ObjectInputStream(fis);
    Set set3 = (Set) ois.readObject();
    ois.close();
    System.out.println(set3);
}

From source file:MainClass.java

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

    List list = Arrays.asList(new String[] { "A", "B", "C", "D" });
    FileOutputStream fos = new FileOutputStream("list.ser");
    ObjectOutputStream oos = new ObjectOutputStream(fos);
    oos.writeObject(list);//  www.j  av  a 2 s  .c  o  m
    oos.close();

    FileInputStream fis = new FileInputStream("list.ser");
    ObjectInputStream ois = new ObjectInputStream(fis);
    List anotherList = (List) ois.readObject();
    ois.close();

    System.out.println(anotherList);
}

From source file:Main.java

public static void main(String[] a) throws Exception {
    List list = Arrays.asList(new String[] { "A", "B", "C", "D" });

    FileOutputStream fos = new FileOutputStream("list.ser");
    ObjectOutputStream oos = new ObjectOutputStream(fos);
    oos.writeObject(list);/*from w  ww .  j  a  v  a 2s  . c om*/
    oos.close();

    FileInputStream fis = new FileInputStream("list.ser");
    ObjectInputStream ois = new ObjectInputStream(fis);
    List anotherList = (List) ois.readObject();
    ois.close();

    System.out.println(anotherList);
}

From source file:MainClass.java

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

    List list = Arrays.asList(new String[] { "A", "B", "C", "D" });

    FileOutputStream fos = new FileOutputStream("list.ser");
    ObjectOutputStream oos = new ObjectOutputStream(fos);
    oos.writeObject(list);//www. ja  v a 2 s  .co m
    oos.close();

    FileInputStream fis = new FileInputStream("list.ser");
    ObjectInputStream ois = new ObjectInputStream(fis);
    List anotherList = (List) ois.readObject();
    ois.close();

    System.out.println(anotherList);
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    FileInputStream fis = new FileInputStream("test");
    ObjectInputStream ois = new ObjectInputStream(fis);
    Object o = ois.readObject();
    if (!(o instanceof String)) {
        System.out.println("Unexpected data in file");
        System.exit(-1);/*w ww .j a  v  a 2 s  .  co m*/
    }
    String data = (String) o;
    System.out.println("Got message " + data);
    o = ois.readObject();
    if (!(o instanceof byte[])) {
        System.out.println("Unexpected data in file");
        System.exit(-1);
    }
    byte origDigest[] = (byte[]) o;
    byte pass[] = "aaa".getBytes();
    byte buf[] = data.getBytes();
    MessageDigest md = MessageDigest.getInstance("SHA");
    md.update(pass);
    md.update(buf);
    byte digest1[] = md.digest();
    md.update(pass);
    md.update(digest1);
    System.out.println(MessageDigest.isEqual(md.digest(), origDigest));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileOutputStream fos = new FileOutputStream("books.dat");
    ObjectOutputStream oos = new ObjectOutputStream(fos);

    Book book = new Book("1", "Java", "A");

    oos.writeObject(book);/* w ww . j a  va 2s. co m*/
    oos.flush();
    oos.close();
    FileInputStream fis = new FileInputStream("books.dat");
    ObjectInputStream ois = new ObjectInputStream(fis);
    book = (Book) ois.readObject();
    System.out.println(book.toString());

    ois.close();
}

From source file:ObjectReader.java

public static void main(String[] arguments) {
    try {// www  .j av a2  s. c  o  m
        FileInputStream fi = new FileInputStream("message.obj");
        ObjectInputStream oi = new ObjectInputStream(fi);
        Message mess = (Message) oi.readObject();
        System.out.println("Message:\n");
        System.out.println("From: " + mess.from);
        System.out.println("To: " + mess.to);
        System.out.println("Date: " + mess.when + "\n");
        for (int i = 0; i < mess.lineCount; i++)
            System.out.println(mess.text[i]);
        oi.close();
    } catch (Exception e) {
        System.out.println("Error " + e.toString());
    }
}

From source file:InputOutputDemoObjectBinaryFile.java

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

    //Write an object or array to binary file "java2sObject.dat":
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("java2sObject.dat"));
    oos.writeObject(new int[] { 2, 3, 5, 7, 11 });
    oos.close();//from  w ww  . ja va  2s . c  om
    //Read objects or arrays from binary file "o.dat":
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("java2sObject.dat"));
    int[] ia = (int[]) (ois.readObject());
    System.out.println(ia[0] + "," + ia[1] + "," + ia[2] + "," + ia[3] + "," + ia[4]);

}

From source file:ObjServer.java

public static void main(String[] args) throws Exception {
    Socket sock = new Socket(args[0], 1234);
    ObjectInputStream ois = new ObjectInputStream(sock.getInputStream());
    Hashtable hash = (Hashtable) ois.readObject();
    System.out.println(hash);//from w  w w .  j  a va2  s  .  c o  m
    ois.close();
    sock.close();
}

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);/*from   w w w.j  a  v a  2 s. c  om*/

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

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

}