Example usage for java.io ObjectOutputStream write

Introduction

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

Prototype

public void write(byte[] buf) throws IOException 

Source Link

Document

Writes an array of bytes.

Usage

From source file:Main.java

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

    ObjectOutputStream out = new ObjectOutputStream(
            new BufferedOutputStream(new FileOutputStream("file.data")));
    out.write(1);
    out.close();/*ww  w.j av a 2  s. c om*/

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

    byte[] byteArray = new byte[10];
    in.read(byteArray);
    System.out.println(Arrays.toString(byteArray));
    in.close();
}

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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.write("java2s.com".getBytes());
    out.close();//from  www  .  j  av  a2s  .c  o  m

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

    byte[] byteArray = new byte[10];
    in.read(byteArray);
    System.out.println(Arrays.toString(byteArray));
    in.close();
}

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From source file:RSATest.java

public static void main(String[] args) {
    try {//www .  j a  va2  s  . co m
        if (args[0].equals("-genkey")) {
            KeyPairGenerator pairgen = KeyPairGenerator.getInstance("RSA");
            SecureRandom random = new SecureRandom();
            pairgen.initialize(KEYSIZE, random);
            KeyPair keyPair = pairgen.generateKeyPair();
            ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(args[1]));
            out.writeObject(keyPair.getPublic());
            out.close();
            out = new ObjectOutputStream(new FileOutputStream(args[2]));
            out.writeObject(keyPair.getPrivate());
            out.close();
        } else if (args[0].equals("-encrypt")) {
            KeyGenerator keygen = KeyGenerator.getInstance("AES");
            SecureRandom random = new SecureRandom();
            keygen.init(random);
            SecretKey key = keygen.generateKey();

            // wrap with RSA public key
            ObjectInputStream keyIn = new ObjectInputStream(new FileInputStream(args[3]));
            Key publicKey = (Key) keyIn.readObject();
            keyIn.close();

            Cipher cipher = Cipher.getInstance("RSA");
            cipher.init(Cipher.WRAP_MODE, publicKey);
            byte[] wrappedKey = cipher.wrap(key);
            DataOutputStream out = new DataOutputStream(new FileOutputStream(args[2]));
            out.writeInt(wrappedKey.length);
            out.write(wrappedKey);

            InputStream in = new FileInputStream(args[1]);
            cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            crypt(in, out, cipher);
            in.close();
            out.close();
        } else {
            DataInputStream in = new DataInputStream(new FileInputStream(args[1]));
            int length = in.readInt();
            byte[] wrappedKey = new byte[length];
            in.read(wrappedKey, 0, length);

            // unwrap with RSA private key
            ObjectInputStream keyIn = new ObjectInputStream(new FileInputStream(args[3]));
            Key privateKey = (Key) keyIn.readObject();
            keyIn.close();

            Cipher cipher = Cipher.getInstance("RSA");
            cipher.init(Cipher.UNWRAP_MODE, privateKey);
            Key key = cipher.unwrap(wrappedKey, "AES", Cipher.SECRET_KEY);

            OutputStream out = new FileOutputStream(args[2]);
            cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.DECRYPT_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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From source file:llc.rockford.webcast.StringUtils.java

public static String encodeBase64BinaryFile(InputStream is) {
    String base64EncodedFile = "";
    try {//from   w ww  .j av a2s  . c o  m
        byte[] bytesFromFile = IOUtils.toByteArray(is);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream stream = new ObjectOutputStream(baos);
        stream.write(bytesFromFile);
        stream.flush();
        stream.close();
        base64EncodedFile = new String(Base64.encodeBase64(baos.toByteArray()));
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return base64EncodedFile;
}

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From source file:org.eclipse.wb.internal.core.utils.IOUtils2.java

/**
 * Writes byte array as length and bytes.
 *//*from   w w  w .  j av a  2s  . c om*/
public static void writeByteArray(ObjectOutputStream oos, byte[] bytes) throws IOException {
    oos.writeInt(bytes.length);
    oos.write(bytes);
}

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From source file:Main.java

public static void writeStroke(Stroke aStroke, ObjectOutputStream out) throws IOException {
    if (aStroke instanceof Serializable) {
        out.writeBoolean(true);// w w  w.j  a v a  2  s.c o  m
        out.writeBoolean(true);
        out.writeObject(aStroke);
    } else if (aStroke instanceof BasicStroke) {
        out.writeBoolean(true);
        out.writeBoolean(false);
        BasicStroke s = (BasicStroke) aStroke;

        float[] dash = s.getDashArray();

        if (dash == null) {
            out.write(0);
        } else {
            out.write(dash.length);
            for (int i = 0; i < dash.length; i++) {
                out.writeFloat(dash[i]);
            }
        }

        out.writeFloat(s.getLineWidth());
        out.writeInt(s.getEndCap());
        out.writeInt(s.getLineJoin());
        out.writeFloat(s.getMiterLimit());
        out.writeFloat(s.getDashPhase());
    } else {
        out.writeBoolean(false);
    }
}

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From source file:org.apache.flink.api.common.accumulators.ListAccumulator.java

@Override
public void write(ObjectOutputStream out) throws IOException {
    int numItems = localValue.size();
    out.writeInt(numItems);/* www.  ja  v  a2 s .  c o m*/
    for (byte[] item : localValue) {
        out.writeInt(item.length);
        out.write(item);
    }
}

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From source file:mitm.application.djigzo.james.EncryptedContainer.java

private void writeObject(ObjectOutputStream out) throws IOException, EncryptorException {
    out.writeLong(serialVersionUID);// w ww . ja v a  2  s.  c om

    byte[] encrypted = getEncryptor().encrypt(SerializationUtils.serialize(value));

    out.writeInt(ArrayUtils.getLength(encrypted));
    out.write(encrypted);
}

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From source file:com.happyblueduck.lembas.datastore.LembasEntity.java

private void writeObject(java.io.ObjectOutputStream out) throws IOException {

    try {/*from   w  ww. j  av a 2s  .c  o  m*/
        org.json.simple.JSONObject result = LembasUtil.serialize(this, false);
        String jsonString = result.toJSONString();
        out.write(jsonString.getBytes());
        //logger.info("> serializing"+ this.getClassName() +":"+ jsonString);
    } catch (UtilSerializeException e) {
        e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
        throw new IOException();

    }

}

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From source file:org.spout.api.inventory.ItemStack.java

private void writeObject(java.io.ObjectOutputStream out) throws IOException {
    out.writeShort(material.getId());//ww w .  ja  va 2 s  .  c o  m
    out.writeShort(material.getData());
    out.writeInt(amount);
    out.writeShort(data);
    byte[] auxData = this.auxData.serialize();
    if (auxData != null) {
        out.writeInt(auxData.length);
        out.write(auxData);
    } else {
        out.writeInt(0);
    }

    if (nbtData != null && !nbtData.isEmpty()) {
        out.writeBoolean(true);
        NBTOutputStream os = new NBTOutputStream(out, false);
        os.writeTag(new CompoundTag("nbtData", nbtData));
        os.close();
    } else {
        out.writeBoolean(false);
    }
}

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