Example usage for java.nio ByteBuffer wrap

Introduction

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

Prototype

public static ByteBuffer wrap(byte[] array)

Source Link

Document

Creates a new byte buffer by wrapping the given byte array.

Usage

From source file:MainClass.java

public static void main(String[] args) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[12]);
    bb.asCharBuffer().put("abcdef");
    System.out.println(toString(bb.array()));
    bb.rewind();//from w  w w .j  a v a 2s . co m
    bb.order(ByteOrder.BIG_ENDIAN);
    bb.asCharBuffer().put("abcdef");
    System.out.println(toString(bb.array()));
    bb.rewind();
    bb.order(ByteOrder.LITTLE_ENDIAN);
    bb.asCharBuffer().put("abcdef");
    System.out.println(toString(bb.array()));
}

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();/*from w ww  .ja v a 2 s .co  m*/
    bytes = new byte[buf.capacity()];
    buf.get(bytes, 0, bytes.length);

}

From source file:Main.java

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

    byte[] bytes = new byte[10];
    ByteBuffer buf = ByteBuffer.wrap(bytes);

    System.out.println(Arrays.toString(buf.array()));
    System.out.println(buf.toString());
}

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 buf = ByteBuffer.wrap(bytes);
}

From source file:Main.java

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

    // Create a non-direct ByteBuffer with a 10 byte capacity
    // The underlying storage is a byte array.
    buffer = ByteBuffer.allocate(10);

    // Create a memory-mapped ByteBuffer with a 10 byte capacity.
    buffer = ByteBuffer.allocateDirect(10);
}

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);//w ww  .j av  a 2 s. c o m

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

From source file:Main.java

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

    byte[] bytes = new byte[10];
    ByteBuffer buf = ByteBuffer.allocate(10);
    buf = ByteBuffer.wrap(bytes);

    System.out.println(Arrays.toString(buf.array()));
    System.out.println(buf.toString());
}

From source file:Main.java

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

    byte[] bytes = new byte[10];
    ByteBuffer buf = ByteBuffer.allocateDirect(10);
    buf = ByteBuffer.wrap(bytes);

    System.out.println(Arrays.toString(buf.array()));
    System.out.println(buf.toString());
}

From source file:Main.java

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

    ByteBuffer bbuf = ByteBuffer.wrap(new byte[10]);
    boolean isDirect = bbuf.isDirect(); // false

    bbuf = ByteBuffer.allocate(10);
    isDirect = bbuf.isDirect(); // false

    bbuf = ByteBuffer.allocateDirect(10);
    isDirect = bbuf.isDirect(); // true

}

From source file:Main.java

public static void main(String[] args) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[] { 0, 0, 0, 0, 0, 0, 0, 'a' });
    bb.rewind();//from   w  w w . j a v  a  2s .  c om
    System.out.println("Byte Buffer");
    while (bb.hasRemaining())
        System.out.println(bb.position() + " -> " + bb.get());
    CharBuffer cb = ((ByteBuffer) bb.rewind()).asCharBuffer();
    System.out.println("Char Buffer");
    while (cb.hasRemaining())
        System.out.println(cb.position() + " -> " + cb.get());
    FloatBuffer fb = ((ByteBuffer) bb.rewind()).asFloatBuffer();
    System.out.println("Float Buffer");
    while (fb.hasRemaining())
        System.out.println(fb.position() + " -> " + fb.get());
    IntBuffer ib = ((ByteBuffer) bb.rewind()).asIntBuffer();
    System.out.println("Int Buffer");
    while (ib.hasRemaining())
        System.out.println(ib.position() + " -> " + ib.get());
    LongBuffer lb = ((ByteBuffer) bb.rewind()).asLongBuffer();
    System.out.println("Long Buffer");
    while (lb.hasRemaining())
        System.out.println(lb.position() + " -> " + lb.get());
    ShortBuffer sb = ((ByteBuffer) bb.rewind()).asShortBuffer();
    System.out.println("Short Buffer");
    while (sb.hasRemaining())
        System.out.println(sb.position() + " -> " + sb.get());
    DoubleBuffer db = ((ByteBuffer) bb.rewind()).asDoubleBuffer();
    System.out.println("Double Buffer");
    while (db.hasRemaining())
        System.out.println(db.position() + " -> " + db.get());
}