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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Java 1.6
Date Wed, 26 Sep 2007 19:15:14 GMT
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Chuck,

Caldarale, Charles R wrote:
>> From: Christopher Schultz [mailto:chris@christopherschultz.net] 
>> Subject: Re: Java 1.6
>>
>> I don't believe that javac has undergone significant upgrades through
>> the years...
> 
> Actually, it has, but the big improvements were between 1.3 and 1.5.

Really? Other than crap like auto-boxing, attributes, and foreach-style
'for' syntax, what has the compiler done for me, lately? I see all that
as syntactic sugar.

> The javac in Java SE 6 doesn't appear to be much different from that in
> 1.5 in terms of efficiency of the generated byte codes.

Has the bytecode emitted by previous versions been perticularly
non-optimized?

>> I would bet that each release of the JVM gets leaner and meaner.
> 
> Definitely meaner, in that the JITs do produce better code.  I certainly
> wouldn't describe either of the HotSpot JITs as "lean".  (The server
> compiler was the basis for a several hundred-page PhD thesis a few years
> ago :-)

I suppose by "leaner", I meant in terms of required RAM. The libraries
certainly aren't getting any lighter through the years ;)

- -chris

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