Re: Binary byte[] buffer to hex byte[] buffer conversion
From: Chris (chris2k01_at_hotmail.com)
Date: 02/18/04
- Previous message: Craig S. Ugoretz: "The Wisdom Seeker IDe, an open source software development project for all"
- In reply to: GianpieroP: "Re: Binary byte[] buffer to hex byte[] buffer conversion"
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Date: Wed, 18 Feb 2004 02:58:08 GMT
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GianpieroP wrote:
> "Chris" <chris2k01@hotmail.com> ha scritto nel messaggio
> news:UzfYb.18042$Hy3.8786@edtnps89...
>> Hi,
>> Or, even more concise, how about a call to
>> java.lang.{Integer|Long}.toHexString()?
>>
>> Heh... don't re-invent the wheel :)
> Ok! So my class loses one method: "... hexify(byte byValue)" and one
> member: "HEX". But my "wheel" is useful again because it presents
> "String hexify(byte[] byArr)" static method. However I'm happy if
> you offers me another existent "wheel" in substitution of my
> hexify(byte[] ) method.
>
> Bye bye,
> GianpieroP
Heh... actually, if working with large values, how about:
public static String hexify(byte[] data) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < data.length; i++) {
sb.append(Integer.toHexString(((int) data[i]) & 0xFF));
}
return sb.toString();
}
The use of StringBuffer is the real point I'm making here, since it's
more efficient than repeated String concatenations. Also, since
Integer.toHexString() takes an int, you have to do the casting
oddness to prevent, say, -1 from turning into 0xFFFFFFFF. Other than
that, your method and mine are about the same. So that's my 2-cent
wheel :)
- --
Chris
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- Previous message: Craig S. Ugoretz: "The Wisdom Seeker IDe, an open source software development project for all"
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