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From: Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: How to convert image into Hex 2 Dimensional Array?
Date: Wed, 08 May 2013 17:32:06 +0200
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On 08/05/2013 15:57, lipska the kat allegedly wrote:
> On 08/05/13 14:19, Daniele Futtorovic wrote:
>> On 08/05/2013 10:06, lipska the kat allegedly wrote:
>>>        Byte[][] bytes = new Byte[width][height];
>>
>> Lipska, mind the difference between Byte and byte. That code above is
>> extremely bad advice.
> 
> Why? it's common practice these days to eschew primitives and use
> (autoboxing) classes, it's more consistent in OO code and, as I
> understand things, post autoboxing, the following two lines are
> logically equivalent.
> 
> 1. Byte[][] bytes = new Byte[width][height];
> 2. byte[][] bytes = new byte[width][length]
> 
> The following is perfectly legal given either of the above
> 
> byte b = 127;
> bytes[0][0] = b;
> Byte c = 126;
> bytes[0][1] = c;
> Byte d = bytes[0][0];
> byte e = bytes[0][1];
> 
> I would of course be interested to know what your objection is.

Simple: "byte[]" is not a primitive type. "byte" is a primitive type.
"byte[]" is a reference type.

Along the same lines, you'll be hard pressed to find a Java I/O library
that uses Byte[]'s rather than byte[]'s.

> Also, I seem to remember being 'told off' for using primitives a while
> back ... ho hum.

I don't know about that.

-- 
DF.