Example usage for java.io FileOutputStream close

Introduction

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

Prototype

public void close() throws IOException 

Source Link

Document

Closes this file output stream and releases any system resources associated with this stream.

Usage

From source file:GenSig.java

public static void main(String[] args) {

    /* Generate a DSA signature */

    if (args.length != 1) {
        System.out.println("Usage: GenSig nameOfFileToSign");
    } else//  w w  w .j av a 2  s  .c o m
        try {

            /* Generate a key pair */

            KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA", "SUN");
            SecureRandom random = SecureRandom.getInstance("SHA1PRNG", "SUN");

            keyGen.initialize(1024, random);

            KeyPair pair = keyGen.generateKeyPair();
            PrivateKey priv = pair.getPrivate();
            PublicKey pub = pair.getPublic();

            /*
             * Create a Signature object and initialize it with the private
             * key
             */

            Signature dsa = Signature.getInstance("SHA1withDSA", "SUN");

            dsa.initSign(priv);

            /* Update and sign the data */

            FileInputStream fis = new FileInputStream(args[0]);
            BufferedInputStream bufin = new BufferedInputStream(fis);
            byte[] buffer = new byte[1024];
            int len;
            while (bufin.available() != 0) {
                len = bufin.read(buffer);
                dsa.update(buffer, 0, len);
            }
            ;

            bufin.close();

            /*
             * Now that all the data to be signed has been read in, generate
             * a signature for it
             */

            byte[] realSig = dsa.sign();

            /* Save the signature in a file */
            FileOutputStream sigfos = new FileOutputStream("sig");
            sigfos.write(realSig);

            sigfos.close();

            /* Save the public key in a file */
            byte[] key = pub.getEncoded();
            FileOutputStream keyfos = new FileOutputStream("suepk");
            keyfos.write(key);

            keyfos.close();

        } catch (Exception e) {
            System.err.println("Caught exception " + e.toString());
        }

}

---

From source file:examples.StatePersistence.java

public static void main(String[] args) throws Exception {
    // Connect to localhost and use the travel-sample bucket
    final Client client = Client.configure().hostnames("localhost").bucket(BUCKET).build();

    // Don't do anything with control events in this example
    client.controlEventHandler(new ControlEventHandler() {
        @Override// w  w  w  . j a  v a 2 s  . c  om
        public void onEvent(ChannelFlowController flowController, ByteBuf event) {
            if (DcpSnapshotMarkerRequest.is(event)) {
                flowController.ack(event);
            }
            event.release();
        }
    });

    // Print out Mutations and Deletions
    client.dataEventHandler(new DataEventHandler() {
        @Override
        public void onEvent(ChannelFlowController flowController, ByteBuf event) {
            if (DcpMutationMessage.is(event)) {
                System.out.println("Mutation: " + DcpMutationMessage.toString(event));
                // You can print the content via DcpMutationMessage.content(event).toString(CharsetUtil.UTF_8);
            } else if (DcpDeletionMessage.is(event)) {
                System.out.println("Deletion: " + DcpDeletionMessage.toString(event));
            }
            event.release();
        }
    });

    // Connect the sockets
    client.connect().await();

    // Try to load the persisted state from file if it exists
    File file = new File(FILENAME);
    byte[] persisted = null;
    if (file.exists()) {
        FileInputStream fis = new FileInputStream(FILENAME);
        persisted = IOUtils.toByteArray(fis);
        fis.close();
    }

    // if the persisted file exists recover, if not start from beginning
    client.recoverOrInitializeState(StateFormat.JSON, persisted, StreamFrom.BEGINNING, StreamTo.INFINITY)
            .await();

    // Start streaming on all partitions
    client.startStreaming().await();

    // Persist the State ever 10 seconds
    while (true) {
        Thread.sleep(TimeUnit.SECONDS.toMillis(10));

        // export the state as a JSON byte array
        byte[] state = client.sessionState().export(StateFormat.JSON);

        // Write it to a file
        FileOutputStream output = new FileOutputStream(new File(FILENAME));
        IOUtils.write(state, output);
        output.close();

        System.out.println(System.currentTimeMillis() + " - Persisted State!");
    }
}

---

From source file:TestSign.java

/**
 * Method main/*  w  ww  .  j a v  a 2  s.  c om*/
 *
 * @param unused
 * @throws Exception
 */
public static void main(String unused[]) throws Exception {
    //J-
    String keystoreType = "JKS";
    String keystoreFile = "data/org/apache/xml/security/samples/input/keystore.jks";
    String keystorePass = "xmlsecurity";
    String privateKeyAlias = "test";
    String privateKeyPass = "xmlsecurity";
    String certificateAlias = "test";
    File signatureFile = new File("signature.xml");
    //J+
    KeyStore ks = KeyStore.getInstance(keystoreType);
    FileInputStream fis = new FileInputStream(keystoreFile);

    ks.load(fis, keystorePass.toCharArray());

    PrivateKey privateKey = (PrivateKey) ks.getKey(privateKeyAlias, privateKeyPass.toCharArray());
    javax.xml.parsers.DocumentBuilderFactory dbf = javax.xml.parsers.DocumentBuilderFactory.newInstance();

    dbf.setNamespaceAware(true);

    javax.xml.parsers.DocumentBuilder db = dbf.newDocumentBuilder();
    org.w3c.dom.Document doc = db.newDocument();
    String BaseURI = signatureFile.toURL().toString();
    XMLSignature sig = new XMLSignature(doc, BaseURI, XMLSignature.ALGO_ID_SIGNATURE_DSA);

    doc.appendChild(sig.getElement());

    {
        ObjectContainer obj = new ObjectContainer(doc);
        Element anElement = doc.createElementNS(null, "InsideObject");

        anElement.appendChild(doc.createTextNode("A text in a box"));
        obj.appendChild(anElement);

        String Id = "TheFirstObject";

        obj.setId(Id);
        sig.appendObject(obj);

        Transforms transforms = new Transforms(doc);

        transforms.addTransform(Transforms.TRANSFORM_C14N_WITH_COMMENTS);
        sig.addDocument("#" + Id, transforms, Constants.ALGO_ID_DIGEST_SHA1);
    }

    {
        X509Certificate cert = (X509Certificate) ks.getCertificate(certificateAlias);

        sig.addKeyInfo(cert);
        sig.addKeyInfo(cert.getPublicKey());
        System.out.println("Start signing");
        sig.sign(privateKey);
        System.out.println("Finished signing");
    }

    FileOutputStream f = new FileOutputStream(signatureFile);

    XMLUtils.outputDOMc14nWithComments(doc, f);
    f.close();
    System.out.println("Wrote signature to " + BaseURI);

    for (int i = 0; i < sig.getSignedInfo().getSignedContentLength(); i++) {
        System.out.println("--- Signed Content follows ---");
        System.out.println(new String(sig.getSignedInfo().getSignedContentItem(i)));
    }
}

---

From source file:controller.tempClass.java

/**
 * @desc Image manipulation - Conversion
 *
 * @filename ImageManipulation.java//from   www . j a v a2 s .  co  m
 * @author Jeevanandam M. (jeeva@myjeeva.com)
 * @copyright myjeeva.com
 */
public static void main(String[] args) {

    File file = new File("E:\\Photograph\\Temporary\\mshien.jpg");

    try {
        // Reading a Image file from file system
        FileInputStream imageInFile = new FileInputStream(file);
        byte imageData[] = new byte[(int) file.length()];
        imageInFile.read(imageData);

        // Converting Image byte array into Base64 String
        System.out.println(encodeImage(imageData));
        String imageDataString = encodeImage(imageData);

        // Converting a Base64 String into Image byte array
        byte[] imageByteArray = decodeImage(imageDataString);

        // Write a image byte array into file system
        FileOutputStream imageOutFile = new FileOutputStream("C:\\Users\\doanvanthien\\Desktop\\LOGO.png");

        imageOutFile.write(imageByteArray);

        imageInFile.close();
        imageOutFile.close();

        System.out.println("Image Successfully Manipulated!");
    } catch (FileNotFoundException e) {
        System.out.println("Image not found" + e);
    } catch (IOException ioe) {
        System.out.println("Exception while reading the Image " + ioe);
    }
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver");
    Connection conn = DriverManager.getConnection(url, username, password);

    String sql = "SELECT name, description, image FROM pictures ";
    PreparedStatement stmt = conn.prepareStatement(sql);
    ResultSet resultSet = stmt.executeQuery();
    while (resultSet.next()) {
        String name = resultSet.getString(1);
        String description = resultSet.getString(2);
        File image = new File("D:\\java.gif");
        FileOutputStream fos = new FileOutputStream(image);

        byte[] buffer = new byte[1];
        InputStream is = resultSet.getBinaryStream(3);
        while (is.read(buffer) > 0) {
            fos.write(buffer);/*from  w  ww . ja va  2 s.c  o m*/
        }
        fos.close();
    }
    conn.close();
}

---

From source file:Example2.java

public static void main(String args[])
        throws IOException, ParseException, DScabiClientException, DScabiException, java.text.ParseException {
    System.out.println("Example2");

    DMeta meta = new DMeta("localhost", "5000");

    DFile f = new DFile(meta);
    f.setNamespace("MyOrg.MyFiles");
    Date date = new Date();

    f.put("scabi:MyOrg.MyFiles:myfile1.txt", "myfile1.txt");
    f.put("myfile2.txt", "myfile2.txt");

    FileInputStream fis = new FileInputStream("myfile3.txt");
    f.put("scabi:MyOrg.MyFiles:myfile3.txt", fis);
    fis.close();/*from  ww  w.jav  a  2 s  .  co m*/

    f.copy("scabi:MyOrg.MyFiles:myfile4.txt", "scabi:MyOrg.MyFiles:myfile1.txt");
    f.copy("myfile5.txt", "scabi:MyOrg.MyFiles:myfile1.txt");

    f.get("scabi:MyOrg.MyFiles:myfile1.txt", "fileout1" + "_" + date.toString() + ".txt");
    f.get("myfile2.txt", "fileout2" + "_" + date.toString() + ".txt");

    FileOutputStream fos = new FileOutputStream("fileout3" + "_" + date.toString() + ".txt");
    f.get("scabi:MyOrg.MyFiles:myfile1.txt", fos);
    fos.close();

    FileOutputStream fos2 = new FileOutputStream("fileout4" + "_" + date.toString() + ".txt");
    f.get("myfile2.txt", fos2);
    fos2.close();

    f.close();
    meta.close();
}

---

From source file:MainClass.java

public static void main(String[] args) {
    File originFile = new File("c:\\file1.txt");
    File destinationFile = new File("c:\\file1.txt");
    if (!originFile.exists() || destinationFile.exists()) {
        return;//from  ww  w  . ja  va2s. co m
    }
    try {
        byte[] readData = new byte[1024];
        FileInputStream fis = new FileInputStream(originFile);
        FileOutputStream fos = new FileOutputStream(destinationFile);
        int i = fis.read(readData);

        while (i != -1) {
            fos.write(readData, 0, i);
            i = fis.read(readData);
        }
        fis.close();
        fos.close();
    } catch (IOException e) {
        System.out.println(e);
    }
}

---

From source file:FileLocking.java

public static void main(String[] args) throws Exception {
    FileOutputStream fos = new FileOutputStream("file.txt");
    FileLock fl = fos.getChannel().tryLock();
    if (fl != null) {
        System.out.println("Locked File");
        Thread.sleep(100);//from   w w w .j  a v  a2 s .  c o m
        fl.release();
        System.out.println("Released Lock");
    }
    fos.close();
}

---

From source file:com.sight.facialrecog.util.ImageManipulation.java

/**
 * @param args/* w  ww .  jav a 2s  .c o  m*/
 */
public static void main(String[] args) {
    File file = new File("/home/sight/Pictures/imagetest/close.jpg");

    try {
        /*
         * Reading an Image file from file system
         */
        FileInputStream imageInFile = new FileInputStream(file);
        byte imageData[] = new byte[(int) file.length()];
        imageInFile.read(imageData);

        /*
         * Converting Image byte array into Base64 String
         */
        String imageDataString = encodeImage(imageData);
        System.out.println(imageDataString);

        /*
         * Converting a Base64 String into Image byte array
         */
        byte[] imageByteArray = decodeImage(imageDataString);

        /*
         * Write an image byte array into file system
         */
        FileOutputStream imageOutFile = new FileOutputStream(
                "/home/sight/Pictures/imagetest/close-after-convert.jpg");
        imageOutFile.write(imageByteArray);

        imageInFile.close();
        imageOutFile.close();

        System.out.println("Image Successfully Manipulated!");
    } catch (FileNotFoundException e) {
        System.out.println("Image not found" + e);
    } catch (IOException ioe) {
        System.out.println("Exception while reading the Image " + ioe);
    }

}

---

From source file:Bzip2Uncompress.java

public static void main(final String[] args) {
    try {/*w w w  .  j  a v a2  s  .c  om*/
        if (2 != args.length) {
            System.out.println("java Bzip2Uncompress <input> <output>");
            System.exit(1);
        }

        final File source = new File(args[0]);
        final File destination = new File(args[1]);
        final FileOutputStream output = new FileOutputStream(destination);
        final BZip2CompressorInputStream input = new BZip2CompressorInputStream(new FileInputStream(source));
        copy(input, output);
        input.close();
        output.close();
    } catch (Exception e) {
        e.printStackTrace();
        System.exit(1);
    }
}

---

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