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:Main.java

public static void main(String[] argv) throws Exception {
    byte[] bytes = new byte[10];
    ByteBuffer buf = ByteBuffer.wrap(bytes);

    buf.clear();
    bytes = new byte[buf.capacity()];
    buf.get(bytes, 0, bytes.length);/*from   w  w  w . j a  v  a2 s .com*/

}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    FileChannel fc = new FileOutputStream("data2.txt").getChannel();
    fc.write(ByteBuffer.wrap("Some text".getBytes("UTF-16BE")));
    fc.close();// www  . j a  va 2s . com
    ByteBuffer buff = ByteBuffer.allocate(BSIZE);
    // Now try reading again:
    fc = new FileInputStream("data2.txt").getChannel();
    buff.clear();
    fc.read(buff);
    buff.flip();
    System.out.println(buff.asCharBuffer());

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileChannel in = new FileInputStream("source.txt").getChannel(),
            out = new FileOutputStream("target.txt").getChannel();
    ByteBuffer buffer = ByteBuffer.allocate(BSIZE);
    while (in.read(buffer) != -1) {
        buffer.flip();/*from   w ww . j  av  a  2s. co  m*/
        out.write(buffer);
        buffer.clear();
    }
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    String fromFileName = args[0];
    String toFileName = args[1];//w w w .  j ava2  s.  com
    FileChannel in = new FileInputStream(fromFileName).getChannel();
    FileChannel out = new FileOutputStream(toFileName).getChannel();

    ByteBuffer buff = ByteBuffer.allocate(32 * 1024);

    while (in.read(buff) > 0) {
        buff.flip();
        out.write(buff);
        buff.clear();
    }

    in.close();
    out.close();
}

From source file:CopyChannels.java

public static void main(String[] args) throws Exception {
    String fromFileName = "from.txt";
    String toFileName = "to.txt";
    FileChannel in = new FileInputStream(fromFileName).getChannel();
    FileChannel out = new FileOutputStream(toFileName).getChannel();

    ByteBuffer buff = ByteBuffer.allocate(32 * 1024);

    while (in.read(buff) > 0) {
        buff.flip();//from  www. ja v  a 2 s  .  c  o m
        out.write(buff);
        buff.clear();
    }

    in.close();
    out.close();
}

From source file:Main.java

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

    FileInputStream fin = new FileInputStream(args[0]);
    GZIPInputStream gzin = new GZIPInputStream(fin);
    ReadableByteChannel in = Channels.newChannel(gzin);

    WritableByteChannel out = Channels.newChannel(System.out);
    ByteBuffer buffer = ByteBuffer.allocate(65536);
    while (in.read(buffer) != -1) {
        buffer.flip();/*w  w w .ja va2 s.c  om*/
        out.write(buffer);
        buffer.clear();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String fromFileName = "from.txt";
    String toFileName = "to.txt";
    FileChannel in = new FileInputStream(fromFileName).getChannel();
    FileChannel out = new FileOutputStream(toFileName).getChannel();

    ByteBuffer buff = ByteBuffer.allocateDirect(32 * 1024);

    while (in.read(buff) > 0) {
        buff.flip();//  www  .j a  v  a2s  .  com
        out.write(buff);
        buff.clear();
    }

    in.close();
    out.close();
}

From source file:ChannelCopy.java

public static void main(String[] args) throws Exception {
    if (args.length != 2) {
        System.out.println("arguments: sourcefile destfile");
        System.exit(1);/*from  ww w  . j  av a  2s  .  com*/
    }
    FileChannel in = new FileInputStream(args[0]).getChannel(),
            out = new FileOutputStream(args[1]).getChannel();
    ByteBuffer buffer = ByteBuffer.allocate(BSIZE);
    while (in.read(buffer) != -1) {
        buffer.flip(); // Prepare for writing
        out.write(buffer);
        buffer.clear(); // Prepare for reading
    }
}

From source file:Main.java

public static void main(String[] args) {
    ByteBuffer bb = ByteBuffer.allocate(2);
    System.out.println("Default  Byte  Order: " + bb.order());
    bb.putShort((short) 300);
    bb.flip();/* w  w w .  j  a  v  a2 s. co m*/
    showByteOrder(bb);

    bb.clear();
    bb.order(ByteOrder.LITTLE_ENDIAN);
    bb.putShort((short) 300);
    bb.flip();
    showByteOrder(bb);
}

From source file:MainClass.java

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

    URL u = new URL("http://www.java2s.com");
    String host = u.getHost();/* w w w . j a  v a2 s.com*/
    int port = 80;
    String file = "/";

    SocketAddress remote = new InetSocketAddress(host, port);
    SocketChannel channel = SocketChannel.open(remote);
    FileOutputStream out = new FileOutputStream("yourfile.htm");
    FileChannel localFile = out.getChannel();

    String request = "GET " + file + " HTTP/1.1\r\n" + "User-Agent: HTTPGrab\r\n" + "Accept: text/*\r\n"
            + "Connection: close\r\n" + "Host: " + host + "\r\n" + "\r\n";

    ByteBuffer header = ByteBuffer.wrap(request.getBytes("US-ASCII"));
    channel.write(header);

    ByteBuffer buffer = ByteBuffer.allocate(8192);
    while (channel.read(buffer) != -1) {
        buffer.flip();
        localFile.write(buffer);
        buffer.clear();
    }

    localFile.close();
    channel.close();
}