[Shacs] Java Triva

[Dr. Tim McGuire]

Dr. B,

I think we should retroactively revoke Mr. Motekaitis' degree until he 
does some remedial work, and learns the difference between a nybble and 
a byte.

Agreed?

TJM

Bronius Motekaitis wrote:

> I don't mean to bring this up again (just read it and saw the 
> datestamp of Apr 7, over a week old), but I hope you two have made up 
> since then..  :O
>
> Another, less discussed fact, is that that of the fifth byte of any 
> Java code: it always falls in the range of 00-FF.
>
> Ok, I'm potentially revealing a weakness in my practice (not my 
> education, mind you, just a "man it's been a long time since I dealt 
> in byte-code"), but isn't a byte = 8bits = 0-F, not 00-FF?  Is this a 
> difference in architecture that dictates this discrepancy?  If so, 
> could Burris' original post have said, "Depending on architecture, the 
> first 4 to 8 bytes is.."
>
> -bronius
>
>
> On 4/7/07, Dr. Tim McGuire <csc_tjm at shsu.edu <mailto:csc_tjm at shsu.edu>> wrote:
>
>
>> The first four bytes in the header for Java class files are CA FE
>     BA BE
>> in hexadecimal. There is an interesting connection between the
>     café St.
>> Michael's Alley and the group the Grateful Dead. Note the first four
>> bytes spell "Café Babe." If you need help making the connection,
>     speak
>> to Mr. Boyle.
>
>     Glad to see, Dr. B., that you are actually progressing in your
>     feeble attempts at making computer science relevant.  First of
>     all, you appropriate my void clint_eastwood(void); example.  (Your
>     modifications, unfortunately, diminished its value.)  And now
>     you're finally bringing up this example -- I've had my CS272
>     students convert the first four bytes of a Java class file into
>     hex as an exercise for several years now (supplementing the
>     previous exercise of converting 12, 5655, 2550276, 76545336,
>     3726755 from octal into hexadecimal.)
>
>     Welcome to the 21st century....  ;)
>
>
>     TJM
>
>
>     -- 
>     Timothy J. McGuire, Ph.D.
>     Department of Computer Science
>     Sam Houston State University
>     Huntsville, Texas 77341-2090
>     mcguire at shsu.edu <mailto:mcguire at shsu.edu>
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>

-- 
Timothy J. McGuire, Ph.D.
Department of Computer Science
Sam Houston State University
Huntsville, Texas  77341-2090
(936)294-1571	mcguire at shsu.edu	http://www.shsu.edu/~csc_tjm/


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