package basic.nio;

import java.nio.ByteBuffer;

import java.nio.CharBuffer;

/**

* ��ȡ��������

*

* @author yangqc 2016.6.2

*/

public class GetData {

private static final int BSIZE = 1024;

public static void main(String[] args) {

ByteBuffer bb = ByteBuffer.allocate(BSIZE); //�����ֽ���

int i = 0;

while (i++ < bb.limit()) //�ж���ʼÿλ�Ƿ�Ϊ0

{

if (bb.get() != 0) {

System.out.println("nonzero");

}

}

System.out.println("i=" + i);

bb.rewind();

bb.asCharBuffer().put("Howdy!");

char c;

bb.rewind();

while ((c = bb.getChar()) != 0) {

System.out.print(c + " ");

}

// System.out.println(bb.position());

// bb.rewind();

CharBuffer cb = ((ByteBuffer) bb.rewind()).asCharBuffer();

System.out.println(cb.remaining());

for (int j = 0; j < cb.remaining(); j++) {

cb.put(j, 'a');

System.out.println(bb);

}

while (cb.hasRemaining()) {

System.out.print((char) cb.get());

}

// System.out.println(bb.position());

System.out.println();

bb.rewind();

bb.asShortBuffer().put((short) -32769);

System.out.println(bb.getShort());

bb.rewind();

bb.asIntBuffer().put(89798798);

System.out.println(bb.getInt());

bb.rewind();

bb.asLongBuffer().put(9809L);

System.out.println(bb.getLong());

bb.rewind();

bb.asFloatBuffer().put(9879798f);

bb.rewind();

bb.asDoubleBuffer().put(2112);

System.out.println(bb.getDouble());

bb.rewind();

}

}