Example usage for java.nio ByteBuffer allocate

Introduction

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

Prototype

public static ByteBuffer allocate(int capacity)

Source Link

Document

Creates a byte buffer based on a newly allocated byte array.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer bbuf = ByteBuffer.allocate(10);
    int capacity = bbuf.capacity(); // 10
    System.out.println(capacity);
    bbuf.putShort(2, (short) 123);
    System.out.println(Arrays.toString(bbuf.array()));
    bbuf.mark();//  w w  w . j  a  v a2s  .  c o  m
    bbuf.reset();
    System.out.println(Arrays.toString(bbuf.array()));
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer bbuf = ByteBuffer.allocate(10);
    int capacity = bbuf.capacity(); // 10
    System.out.println(capacity);
    bbuf.putShort(2, (short) 123);

    ByteBuffer bb = bbuf.duplicate();

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

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer bbuf = ByteBuffer.allocate(10);
    int capacity = bbuf.capacity(); // 10
    System.out.println(capacity);
    bbuf.putShort(2, (short) 123);

    ByteBuffer bb = bbuf.compact();

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

From source file:Main.java

public static void main(String[] args) {
    ByteBuffer bb = ByteBuffer.allocate(BSIZE);
    bb.asCharBuffer().put("java2s.com");
    bb.rewind();/*from   ww w.  j  a v a2 s.co  m*/
    char c;
    while ((c = bb.getChar()) != 0)
        System.out.print(c + " ");
    System.out.println();

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer bbuf = ByteBuffer.allocate(10);
    int capacity = bbuf.capacity(); // 10
    System.out.println(capacity);
    bbuf.putShort(2, (short) 123);

    ByteOrder byteOrder = bbuf.order();

    System.out.println(byteOrder);
}

From source file:MainClass.java

public static void main(String[] args) {
    ByteBuffer bb = ByteBuffer.allocate(BSIZE);
    int i = 0;/*from ww w .  j  ava2s .co  m*/
    while (i++ < bb.limit())
        if (bb.get() != 0)
            System.out.println("nonzero");
    System.out.println("i = " + i);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer bbuf = ByteBuffer.allocate(10);
    int capacity = bbuf.capacity(); // 10
    System.out.println(capacity);
    bbuf.putShort(2, (short) 123);
    bbuf.order(ByteOrder.LITTLE_ENDIAN);
    ByteOrder byteOrder = bbuf.order();

    System.out.println(byteOrder);
}

From source file:MainClass.java

public static void main(String argv[]) {
    ByteBuffer bb = ByteBuffer.allocate(100);

    bb.mark();/*from w w  w  .ja va 2s.c  o  m*/
    bb.position(5);
    bb.reset();

    bb.mark().position(5).reset();

    char[] myBuffer = new char[100];

    CharBuffer cb = CharBuffer.wrap(myBuffer);
    cb.position(12).limit(21);

    CharBuffer sliced = cb.slice();

    System.out.println("Sliced: offset=" + sliced.arrayOffset() + ", capacity=" + sliced.capacity());
}

From source file:Main.java

public static void main(String[] args) {
    ByteBuffer bb = ByteBuffer.allocate(8);

    System.out.println("Capacity: " + bb.capacity());
    System.out.println("Limit: " + bb.limit());
    System.out.println("Position: " + bb.position());

    // The mark is not set for a new buffer. Calling the
    // reset() method throws a runtime exception if the mark is not set.
    try {//  w  w w . j a v a  2 s.co  m
        bb.reset();
        System.out.println("Mark: " + bb.position());
    } catch (InvalidMarkException e) {
        System.out.println("Mark is not  set");
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer buf = ByteBuffer.allocate(100);

    CharBuffer cbuf = buf.asCharBuffer();

    cbuf.put("a string");

    int start = 2; // start is relative to cbuf's current position
    int end = 5;//  w  w  w.  j  a  v  a 2s . c  o m
    CharSequence sub = cbuf.subSequence(start, end); // str

}