// newio/GetData.java

// (c)2021 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

// Getting different representations from a ByteBuffer

import java.nio.*;

public class GetData {

private static final int BSIZE = 1024;

public static void main(String[] args) {

ByteBuffer bb = ByteBuffer.allocate(BSIZE);

// Allocation automatically zeroes the ByteBuffer:

int i = 0;

while(i++ < bb.limit())

if(bb.get() != 0)

System.out.println("nonzero");

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

bb.rewind();

// Store and read a char array:

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

char c;

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

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

System.out.println();

bb.rewind();

// Store and read a short:

bb.asShortBuffer().put((short)471142);

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

bb.rewind();

// Store and read an int:

bb.asIntBuffer().put(99471142);

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

bb.rewind();

// Store and read a long:

bb.asLongBuffer().put(99471142);

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

bb.rewind();

// Store and read a float:

bb.asFloatBuffer().put(99471142);

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

bb.rewind();

// Store and read a double:

bb.asDoubleBuffer().put(99471142);

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

bb.rewind();

}

}

/* Output:

i = 1025

H o w d y !

12390

99471142

99471142

9.9471144E7

9.9471142E7

*/