Buffer Example of Endian differences

package com.bruceeckel;
 
//: c12:Endians.java
//Endian differences and data storage.
//From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
//www.BruceEckel.com. See copyright notice in CopyRight.txt.
 
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
 
public class Endians {
 
    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();
	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()));
 
    }
 
    static String toString(byte[] a) {
	StringBuffer result = new StringBuffer("[");
	for (int i = 0; i < a.length; i++) {
	    result.append(a[i]);
	    if (i < a.length - 1)
		result.append(", ");
	}
	result.append("]");
	return result.toString();
    }
}