Example usage for java.io ObjectInputStream ObjectInputStream

Introduction

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

Prototype

public ObjectInputStream(InputStream in) throws IOException

Source Link

Document

Creates an ObjectInputStream that reads from the specified InputStream.

Usage

From source file:Main.java

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

    String s = "Hello World from java2s.com";
    byte[] b = { 'e', 'x', 'a', 'm', 'p', 'l', 'e' };

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

    // write something in the file
    oout.writeObject(s);/*w  w  w  .  j a  v a2 s.  co  m*/
    oout.writeObject(b);
    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 object and cast it as string
    System.out.println((String) ois.readObject());

    // read and print an object and cast it as string
    byte[] read = (byte[]) ois.readObject();
    String s2 = new String(read);
    System.out.println(s2);
    ois.close();
}

From source file:LoopingSocketServer.java

public static void main(String args[]) throws Exception {
    ServerSocket servSocket;//from  w  w  w .java2 s  .c  om
    Socket fromClientSocket;
    int cTosPortNumber = 1777;
    String str;

    servSocket = new ServerSocket(cTosPortNumber);
    System.out.println("Waiting for a connection on " + cTosPortNumber);
    fromClientSocket = servSocket.accept();
    System.out.println("fromClientSocket accepted");

    ObjectOutputStream oos = new ObjectOutputStream(fromClientSocket.getOutputStream());

    ObjectInputStream ois = new ObjectInputStream(fromClientSocket.getInputStream());

    while ((str = (String) ois.readObject()) != null) {
        System.out.println("The message from client:  " + str);

        if (str.equals("bye")) {
            oos.writeObject("bye bye");
            break;
        } else {
            str = "Server returns " + str;
            oos.writeObject(str);
        }

    }
    oos.close();
    fromClientSocket.close();
}

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  ava2  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);
}

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 . c om
    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();
}

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);/*  w  w  w  .j ava 2  s.c o  m*/
    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:Main.java

public static void main(String[] args) {
    int[] x = new int[] { 1, 2, 3 };
    int[] y = new int[] { 4, 5, 6 };
    Polygon polygon = new Polygon(x, y, x.length);
    try {/*from  w ww  . java2s  .  c om*/
        ObjectOutputStream objectOut = new ObjectOutputStream(
                new BufferedOutputStream(new FileOutputStream("Polygons.bin")));
        objectOut.writeObject(polygon);
        objectOut.close();
    } catch (IOException e) {
        e.printStackTrace(System.err);
    }
    try {
        ObjectInputStream objectIn = new ObjectInputStream(
                new BufferedInputStream(new FileInputStream("Polygons.bin")));
        Polygon theLine = (Polygon) objectIn.readObject();
        System.out.println(theLine);
        objectIn.close();
    } catch (Exception e) {
        e.printStackTrace(System.err);
    }
}

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);/* ww  w  .j  av  a2s . c  o m*/
    ois.close();
    sock.close();
}

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 www. j a v  a  2s  .com

    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();

}

From source file:SerialDemo.java

static public void main(String[] args) {
    try {/*from ww w .  j a  v  a2  s  .co  m*/
        { // Save a SerialDemo object with a value of 5.
            FileOutputStream f = new FileOutputStream("/tmp/testing");
            ObjectOutputStream s = new ObjectOutputStream(f);
            SerialDemo d = new SerialDemo(5);

            s.writeObject(d);
            s.flush();
        }
        { // Now restore it and look at the value.
            FileInputStream f = new FileInputStream("/tmp/testing");
            ObjectInputStream s = new ObjectInputStream(f);
            SerialDemo d = (SerialDemo) s.readObject();

            System.out.println("SerialDemo.getVal() is: " + d.getVal());
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String args[]) throws IOException, ClassNotFoundException {
    File file = new File("test.txt");
    FileOutputStream outFile = new FileOutputStream(file);
    ObjectOutputStream outStream = new ObjectOutputStream(outFile);
    TestClass1 t1 = new TestClass1(true, 9, 'A', 0.0001, "java");
    TestClass2 t2 = new TestClass2();
    String t3 = "This is a test.";
    Date t4 = new Date();
    outStream.writeObject(t1);//from w w w  .  j  av a  2s. c om
    outStream.writeObject(t2);
    outStream.writeObject(t3);
    outStream.writeObject(t4);
    outStream.close();
    outFile.close();
    FileInputStream inFile = new FileInputStream(file);
    ObjectInputStream inStream = new ObjectInputStream(inFile);
    System.out.println(inStream.readObject());
    System.out.println(inStream.readObject());
    System.out.println(inStream.readObject());
    System.out.println(inStream.readObject());
    inStream.close();
    inFile.close();
    file.delete();
}