Re: Issue with JDK/JRE Environment Setup

From:
Lew <noone@lewscanon.com>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 01 Mar 2011 04:47:52 -0500
Message-ID:
<ikifc6$90q$1@news.albasani.net>
Wayne wrote:

The two JREs are identical right after you've updated the JDK. But
if later the JRE alone is updated, only one of the two JREs get updated,
the "public" one. So if you have automatic updates set in the Java
control panel, then over time the two JREs would be different versions.


Like I said, that depends on how you update. Why would someone working with a
JDK set their JRE to auto-update and then be so careless as to let it fall out
of synch, even assuming such a one installed both?

Running the 6u22 JDK tools, compiled against a 6u22 JRE, may not be
safe to run on a 6u24 JRE. The "private" JRE is only used by the JDK tools,


More bullshit.

the latest "public" JRE by your applications. If you are running the 6u22 javac


Unless you establish the JDK as your "public" JRE.

with a 6u24 JRE, or vice-versa, the results will probably work fine, but
there is no reason to take such a chance. (E.g., what if some static final int
changed values in some standard library?)


Really, that is nonsense. There are only bug fixes between _xx versions. If
you run the 6u22 and 6u24 versions of javac, the only difference will be that
the former will have a bug the latter does not. Either will work fine with
*any* previous version of Java, save for bugs in those previous versions.
Either will work fine with each other's JVM, save for the aforementioned bugs.
  That's the fact, contrary to what you said.

Lew, you're one of the smartest contributors to this group, but you can
be quite rude in your posts. Please don't assume statements are
a pack of lies, weird and fallacious, or whatever, just because you don't


I didn't "assume". The things you claimed actually were a pack of lies, weird
and fallacious.

Don't spread false information then act aggrieved when you're called on it.

It's not "rude" to tell the truth. What you did is what's rude, namely tell
lies then get upset when that was objectively mentioned.

agree. If I'm wrong (which happens often!) I'd appreciate it if you could
tell me so politely, or not at all. In this case, I think you forgot that
the public JRE can be updated independently (and in some cases automatically)


Only if you choose that, which does not obviate your responsibility to ensure
coordination of that with other versions where you care.

from the private JRE used by the JDK tools. But if I'm wrong, please explain
the real reason why the JDK installs a separate copy of the JRE (along with
the public JRE).


You shouldn't assume I forgot anything, particularly when I addressed it in
the post to which you're responding.

What's rude is to post false information then act all insulted when it's
pointed out that your statements are wrong. Which they were. No "assumption"
there - your statements contradicted fact. Then when challenging you play the
"rude" card instead of correcting your bad information. That is bad behavior.

Why should I coddle your feelings when you are spreading disinformation? I am
much more concerned with the feelings of those who follow your mistaken advice.

As you should be. Get your ego out of the way.

--
Lew
Honi soit qui mal y pense.

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