Example usage for java.nio ByteBuffer clear

Introduction

In this page you can find the example usage for java.nio ByteBuffer clear.

Prototype

public final Buffer clear()

Source Link

Document

Clears this buffer.

Usage

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    File aFile = new File("charData.xml");
    FileInputStream inFile = null;

    inFile = new FileInputStream(aFile);

    FileChannel inChannel = inFile.getChannel();
    ByteBuffer buf = ByteBuffer.allocate(48);

    while (inChannel.read(buf) != -1) {
        System.out.println("String read: " + ((ByteBuffer) (buf.flip())).asCharBuffer().get(0));
        buf.clear();
    }/* w w w.  j  a  v a  2s .  co  m*/
    inFile.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    DatagramChannel client = null;
    client = DatagramChannel.open();

    client.bind(null);/*from ww w. jav a  2s. com*/

    String msg = "Hello";
    ByteBuffer buffer = ByteBuffer.wrap(msg.getBytes());
    InetSocketAddress serverAddress = new InetSocketAddress("localhost", 8989);

    client.send(buffer, serverAddress);
    buffer.clear();
    client.receive(buffer);
    buffer.flip();
    int limits = buffer.limit();
    byte bytes[] = new byte[limits];
    buffer.get(bytes, 0, limits);
    String response = new String(bytes);
    System.out.println("Server  responded: " + response);
    client.close();
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    DatagramChannel channel = DatagramChannel.open();
    DatagramSocket socket = channel.socket();
    SocketAddress address = new InetSocketAddress(9999);
    socket.bind(address);/*from  ww w. ja v a2s.c om*/
    ByteBuffer buffer = ByteBuffer.allocateDirect(65507);
    while (true) {
        SocketAddress client = channel.receive(buffer);
        buffer.flip();
        channel.send(buffer, client);
        buffer.clear();
    }
}

From source file:MainClass.java

public static void main(String[] args) {
    try {/*ww  w.  ja va2  s  .co  m*/
        File aFile = new File("test.txt");

        FileOutputStream outputFile = null;
        outputFile = new FileOutputStream(aFile, true);
        FileChannel outChannel = outputFile.getChannel();

        ByteBuffer buf = ByteBuffer.allocate(200);

        buf.putInt(10).asCharBuffer().put("www.java2s.com");

        buf.position(10).flip();
        outChannel.write(buf);
        buf.clear();

        outputFile.close();

    } catch (Exception e) {
        e.printStackTrace();

    }

}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    FileChannel fc = new FileOutputStream("data2.txt").getChannel();
    ByteBuffer buff = ByteBuffer.allocate(24); // More than needed
    buff.asCharBuffer().put("Some text");
    fc.write(buff);/* ww w  .j  a va2 s.com*/
    fc.close();

    fc = new FileInputStream("data2.txt").getChannel();
    buff.clear();
    fc.read(buff);
    buff.flip();
    System.out.println(buff.asCharBuffer());

}

From source file:Main.java

static public void main(String args[]) throws Exception {
    FileInputStream fin = new FileInputStream("infile.txt");
    FileOutputStream fout = new FileOutputStream("outfile.txt");

    FileChannel inc = fin.getChannel();
    FileChannel outc = fout.getChannel();

    ByteBuffer bb = ByteBuffer.allocate(1024);

    while (true) {
        int ret = inc.read(bb);
        if (ret == -1)
            break;
        bb.flip();// w  ww .j a  v a  2  s  .c o m
        outc.write(bb);
        bb.clear();
    }
}

From source file:Main.java

static public void main(String args[]) throws Exception {
    FileInputStream fin = new FileInputStream("infile.txt");
    FileOutputStream fout = new FileOutputStream("outfile.txt");

    FileChannel inc = fin.getChannel();
    FileChannel outc = fout.getChannel();

    ByteBuffer bb = ByteBuffer.allocateDirect(1024);

    while (true) {
        int ret = inc.read(bb);
        if (ret == -1)
            break;
        bb.flip();/*  w ww  .  ja  v  a  2s. c o m*/
        outc.write(bb);
        bb.clear();
    }
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    int port = 19;

    SocketAddress address = new InetSocketAddress("127.0.0.1", port);
    SocketChannel client = SocketChannel.open(address);

    ByteBuffer buffer = ByteBuffer.allocate(74);
    WritableByteChannel out = Channels.newChannel(System.out);

    while (client.read(buffer) != -1) {
        buffer.flip();/*from  ww w  . j  ava 2  s . c om*/
        out.write(buffer);
        buffer.clear();
    }
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    int port = 1919;

    SocketAddress address = new InetSocketAddress("127.0.0.1", port);
    SocketChannel client = SocketChannel.open(address);
    ByteBuffer buffer = ByteBuffer.allocate(4);
    IntBuffer view = buffer.asIntBuffer();

    for (int expected = 0;; expected++) {
        client.read(buffer);//from   w  w w  .j  a v  a2 s .  c  o  m
        int actual = view.get();
        buffer.clear();
        view.rewind();

        if (actual != expected) {
            System.err.println("Expected " + expected + "; was " + actual);
            break;
        }
        System.out.println(actual);
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    // Create a ByteBuffer from a byte array
    byte[] bytes = new byte[10];
    ByteBuffer buffer = ByteBuffer.wrap(bytes);

    // Retrieve bytes between the position and limit
    bytes = new byte[buffer.remaining()];
    buffer.get(bytes, 0, bytes.length);/*from   w  w  w . j av a2  s  .  c  om*/

    // Retrieve all bytes in the buffer
    buffer.clear();
    bytes = new byte[buffer.capacity()];
    buffer.get(bytes, 0, bytes.length);
}