Re: Lost in J2ME

From: huy (nytimes_at_swiftdsl.com.au)
Date: 04/23/04 

Date: Sat, 24 Apr 2004 00:27:16 +1000

Darryl L. Pierce wrote:
> huy wrote:
>
>
>>Take a look at the IBM J9 JVM. This supports CDC/Personal profile which
>>is probably what you want for the Symbol device. J2ME CDC/PP is J2SE
>>with some missing APIs (things Sun has decided you won't need for a PDA
>>application).
>
>
> Uh, no, that's quite misleading. The CDC is *not* J2SE, it's *not* the JVM.
> It is the *CVM* which has lower resource requirements than does the JVM,
> and runs a different class of byte code than the JVM.
>
>

I don't care much for CVM vs JVM specifics. I use JVM to mean an
application (I won't even say Java Virtual Machine) which executes my
java class files. I don't understand or care much for "different"
classes of byte code, as I am only an application programmer.

> Personal Java is *not* the predecessor to any J2ME Profile, although there
> is a well-documented migration path from Personal Java to the Personal
> Profile.

Again, I don't care about marketing BS. PersonalJava was introduced
before J2ME to more or less cater for the type of devices we are
referring to here (the fact that it was crap is another matter),
therefore I can refer to it as preceding J2ME whether anybody else (Sun
or yourself) tells me otherwise. I am only a lowly programmer who wants
to write applications which satisfy requirements. I don't care much for
specifics which don't make a difference to this goal.

>
>>2. Stay away form AWT if your application requires many windows/frames,
>>try SWT (Eclipse project) instead.
>
>
> SWT isn't available on any profile. However, the AWT *is* available with the
> Personal and Personal Basis Profiles.

Who cares if it's not part of the spec (Sun doesn't know everything),
just try using it with J9.

Cheers,

Huy

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