Example usage for java.io ByteArrayOutputStream ByteArrayOutputStream

List of usage examples for java.io ByteArrayOutputStream ByteArrayOutputStream

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Introduction

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

Prototype

public ByteArrayOutputStream()

Source Link

Document

Creates a new ByteArrayOutputStream .

Usage

From source file:Main.java

public static void main(String[] args) throws IOException {
    URL url = new URL("http://www.java2s.com/style/download.png");

    InputStream inputStream = url.openStream();
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    byte[] buffer = new byte[1024];

    int n = 0;//w  w  w  . j a v  a2  s .c  o  m
    while (-1 != (n = inputStream.read(buffer))) {
        output.write(buffer, 0, n);
    }
    inputStream.close();

    byte[] data = output.toByteArray();

    OutputStream out = new FileOutputStream("data.png");
    out.write(data);
    out.close();

    for (byte b : data) {
        System.out.printf("0x%x ", b);
    }
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    String[] a = new String[] { "a", "b", "c" };

    Vector v = new Vector(Arrays.asList());
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(baos);
    oos.writeObject(v);/* w ww  . j  a va2 s . c om*/
    oos.close();
    ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    ObjectInputStream ois = new ObjectInputStream(bais);
    Vector v2 = (Vector) ois.readObject();
    Enumeration e = v.elements();
    while (e.hasMoreElements()) {
        System.out.println(e.nextElement());
    }
}

From source file:SaveVector.java

public static void main(String args[]) throws Exception {
    String data[] = { "Java", "Source", "and", "Support", "." };
    Vector v = new Vector(Arrays.asList(data));
    ByteArrayOutputStream b = new ByteArrayOutputStream();
    ObjectOutputStream o = new ObjectOutputStream(b);
    o.writeObject(v);//ww  w  .  jav  a 2  s . c o m
    o.close();
    ByteArrayInputStream bb = new ByteArrayInputStream(b.toByteArray());
    ObjectInputStream oo = new ObjectInputStream(bb);
    Vector v2 = (Vector) oo.readObject();
    Enumeration e = v.elements();
    while (e.hasMoreElements()) {
        System.out.println(e.nextElement());
    }
}

From source file:MainClass.java

public static void main(String[] args) throws IOException, ClassNotFoundException {
    MyBean sc = new MyBean("Test1", "Test2");
    System.out.println("Before:\n" + sc);

    ByteArrayOutputStream buf = new ByteArrayOutputStream();
    ObjectOutputStream o = new ObjectOutputStream(buf);
    o.writeObject(sc);/*from  ww  w. j ava  2 s .  co  m*/

    ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(buf.toByteArray()));
    MyBean sc2 = (MyBean) in.readObject();
    System.out.println("After:\n" + sc2);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Object object = new JButton("push me");

    ObjectOutput out = new ObjectOutputStream(new FileOutputStream("filename.ser"));
    out.writeObject(object);/*from   w ww.  j  a  v  a2  s  .c o m*/
    out.close();

    // Serialize to a byte array
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    out = new ObjectOutputStream(bos);
    out.writeObject(object);
    out.close();

    // Get the bytes of the serialized object
    byte[] buf = bos.toByteArray();
    System.out.println(new String(buf));
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    float sampleRate = 8000;
    int sampleSizeInBits = 8;
    int channels = 1;
    boolean signed = true;
    boolean bigEndian = true;
    final AudioFormat format = new AudioFormat(sampleRate, sampleSizeInBits, channels, signed, bigEndian);
    DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
    final TargetDataLine line = (TargetDataLine) AudioSystem.getLine(info);
    line.open(format);/*from w ww.j  a  va2  s.c o m*/
    line.start();
    Runnable runner = new Runnable() {
        int bufferSize = (int) format.getSampleRate() * format.getFrameSize();

        byte buffer[] = new byte[bufferSize];

        public void run() {
            try {

                int count = line.read(buffer, 0, buffer.length);
                if (count > 0) {
                    out.write(buffer, 0, count);
                }

                out.close();
            } catch (IOException e) {
                System.err.println("I/O problems: " + e);
                System.exit(-1);
            }
        }
    };
    Thread captureThread = new Thread(runner);
    captureThread.start();

    byte audio[] = out.toByteArray();
    InputStream input = new ByteArrayInputStream(audio);
    final SourceDataLine line1 = (SourceDataLine) AudioSystem.getLine(info);
    final AudioInputStream ais = new AudioInputStream(input, format, audio.length / format.getFrameSize());
    line1.open(format);
    line1.start();

    runner = new Runnable() {
        int bufferSize = (int) format.getSampleRate() * format.getFrameSize();

        byte buffer[] = new byte[bufferSize];

        public void run() {
            try {
                int count;
                while ((count = ais.read(buffer, 0, buffer.length)) != -1) {
                    if (count > 0) {
                        line1.write(buffer, 0, count);
                    }
                }
                line1.drain();
                line1.close();
            } catch (IOException e) {
                System.err.println("I/O problems: " + e);
                System.exit(-3);
            }
        }
    };
    Thread playThread = new Thread(runner);
    playThread.start();

}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    XmpWriter xmp = new XmpWriter(os);
    XmpSchema dc = new DublinCoreSchema();
    XmpArray subject = new XmpArray(XmpArray.UNORDERED);
    subject.add("Metadata");
    dc.setProperty(DublinCoreSchema.SUBJECT, subject);
    xmp.addRdfDescription(dc);//from   w w  w  . jav  a  2  s  .c o  m
    PdfSchema pdf = new PdfSchema();
    pdf.setProperty(PdfSchema.KEYWORDS, "Hello World, XMP, Metadata");
    pdf.setProperty(PdfSchema.VERSION, "1.4");
    xmp.addRdfDescription(pdf);
    xmp.close();
    writer.setXmpMetadata(os.toByteArray());
    document.open();
    document.add(new Paragraph("Hello World"));
    document.close();
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    String sessionCookie = null;/* w  ww.  ja  va 2  s  .c  o m*/
    URL url = new java.net.URL("http://127.0.0.1/yourServlet");
    URLConnection con = url.openConnection();
    if (sessionCookie != null) {
        con.setRequestProperty("cookie", sessionCookie);
    }
    con.setUseCaches(false);
    con.setDoOutput(true);
    con.setDoInput(true);
    ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
    DataOutputStream out = new DataOutputStream(byteOut);
    out.flush();
    byte buf[] = byteOut.toByteArray();
    con.setRequestProperty("Content-type", "application/octet-stream");
    con.setRequestProperty("Content-length", "" + buf.length);
    DataOutputStream dataOut = new DataOutputStream(con.getOutputStream());
    dataOut.write(buf);
    dataOut.flush();
    dataOut.close();
    DataInputStream in = new DataInputStream(con.getInputStream());
    int count = in.readInt();
    in.close();
    if (sessionCookie == null) {
        String cookie = con.getHeaderField("set-cookie");
        if (cookie != null) {
            sessionCookie = parseCookie(cookie);
            System.out.println("Setting session ID=" + sessionCookie);
        }
    }

    System.out.println(count);
}

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);//from w  w  w  .  j  a  va 2s. com
    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();
    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:Main.java

public static void main(String[] args) throws Exception {
    int size = 200;
    BufferedImage image = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);

    Graphics2D g = image.createGraphics();
    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g.setColor(Color.BLUE);/*w  w  w.  j a  v  a2  s  .  c  o m*/
    for (int i = 0; i < size; i += 5) {
        g.drawOval(i, i, size - i, size - i);
    }
    g.dispose();

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ImageIO.write(image, "png", baos);

    String data = DatatypeConverter.printBase64Binary(baos.toByteArray());
    String imageString = "data:image/png;base64," + data;
    String html = "<html><body><img src='" + imageString + "'></body></html>";
    System.out.println(html);
}