Re: JDK for my PC. -- MIDRANGE-L

Hello Jim,

You are most welcome.

I know that version 8 of the Semeru Runtime does support Java Web Start
(JNLP) by bundling Iced-Tea. Version 11 does not come packaged with
Iced-Tea. Iced-Tea is prepackaged and ready to go if you use the MSI. If you
deploy using the ZIP, you'll have to set it up manually.

Personally, I had used Iced-Tea before with AdoptOpenJDK, but it became an
annoyance to maintain, so we started paying for Oracle's JRE on admin
machines, and we deploy the OpenJ9 JVM runtimes on client workstations
(previously AdoptOpenJDK, now Semeru).

Oracle themselves deprecated Java Web Start in Java 8, so I don't know what
IBM plans on doing after Java 8 goes bye-bye. According to IBM
(https://www.ibm.com/support/pages/semeru-runtimes-support#lifecycle), for
Semeru 8 JRE we don't have to worry about that until Dec. 2030.

(To Rob) If you need Java Web Start and can't/don't want to use Oracle's
JRE, then I would recommend sticking to Semeru version 8.

------------
Jacob
------------

-----------------------------------------
Jacob Banda
Hamer Enterprises
TEL: 956.682.3466
EMAIL: jnbanda@xxxxxxxxxx
-----------------------------------------

-----Original Message-----
date: Tue, 21 Sep 2021 07:02:41 -0500
from: Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx>
subject: Re: JDK for my PC.

Jacob, thank you for explaining all of that.

Do you know if this version of Java will support the Download Director JLNP
files?

IBM loves to rely on that software, but then dropped the javaws from the
OpenJDK downloads. I understand why, but then having to do one handed
cartwheels while playing a trumpet to get director to work was too painful.

Jim Oberholtzer
Agile Technology Architects

On Sep 20, 2021, at 4:39 PM, Jacob Banda <jnbanda@xxxxxxxxxx> wrote:

?Hello Rob,

JRE vs JDK
If you're going to use Java just for ACS, all you need is the JRE, not
the JDK. Also, Normal is all you need, not Large Heap.

MSI vs ZIP
This just depends on how you prefer to deploy the JRE. If you're
installing on Windows machines, you can use the MSI. It will give you
a typical installation that can be removed via the Control Panel. It
can also can be deployed via Group Policy, so that could be a help for
your Active Directory Domain Admin. If you prefer to bundle the JRE
with ACS upon deployment, then download the ZIP and unzip it to the
following path ./Start_Programs/Windows_x86-64, as described here
(https://www.ibm.com/support/pages/node/792205). When you deploy ACS
with the script, it will copy the JRE to the necessary path.

OpenJ9 vs HotSpot (and AdoptOpenJDK)
I've been using the OpenJ9 JVM. I could've sworn I had issues at one
point with the HotSpot JVM and ACS, so I just stuck with OpenJ9. That
could no longer be an issue. With regards to AdoptOpenJDK, see my last
post for a quick primer on where to get your Java Runtime:
https://archive.midrange.com/midrange-l/202109/msg00095.html. Long
story short, if you want to continue using the OpenJ9 JVM, start
getting it from IBM's Semeru Runtime, as AdoptOpenJDK will no longer
release updates for OpenJ9. The AdoptOpenJDK page is going away soon,
and they are already listing the Semeru Runtimes for OpenJ9. From the

AdoptOpenJDK website:

"*Semeru Runtimes releases are provided by IBM. Please consume these
binaries from developer.ibm.com going forward."

------------
Jacob
------------

-----Original Message-----
date: Mon, 20 Sep 2021 19:40:25 +0000
from: Rob Berendt <rob@xxxxxxxxx>
subject: RE: JDK for my PC.

Roberto,
I'm not a developer (at least for Java).

From the site you recommended, do I download the JDK or the JRE?

And do I pull down the zip or the msi?

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600
Mail to: 7310 Innovation Blvd, Suite 104
Ft. Wayne, IN 46818
Ship to: 7310 Innovation Blvd, Dock 9C
Ft. Wayne, IN 46818
http://www.dekko.com

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of
Roberto Jos? Etcheverry Romero
Sent: Monday, September 20, 2021 3:30 PM
To: Midrange Systems Technical Discussion
<midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: JDK for my PC.

CAUTION: This email originated from outside of the organization. Do
not click links or open attachments unless you recognize the sender
and know the content is safe.

Rob, in the meantime, AdoptOpenJDK got absorbed or bought into another
company and they won't be distributing IBM's J9 runtime anymore.
That's why IBM came with that "marketing did not check what semeru
means to a normal japanese" name.
You can download the semeru runtime built by IBM directly from:
https://developer.ibm.com/languages/java/semeru-runtimes/
And there you can get the Java 11 J9 JDK for Windows.

On Mon, 20 Sept 2021 at 15:09, Rob Berendt <rob@xxxxxxxxx> wrote:

This has probably been discussed but I haven't really followed along
enough to know anything than I should not be using Oracle JDK on my

laptop,

especially if it splashes something similar to "home use".

Trying to follow the IBM suggestions and I'd like to stick with
those, unless there's a really good reason not to.

So I start out with the page: "Java Options for IBM i Access Client
Solutions?" at

https://www.ibm.com/support/pages/java-options-ibm-i-access-client-sol
utions
#:~:text=8.0%20released%20in%20June%202018,current%20update%20of%20Jav
a%2011

This site says: IBM recommends running with a current update of Java 11.

It also says:
IBM i ACS customers can download OpenJDK with the IBM OpenJ9 JVM from

here:

https://adoptopenjdk.net/releases.html?variant=openjdk11&jvmVariant=o
penj9

So I go there. I pick
OpenJDK 11 (LTS) and OpenJ9
Windows

Do I pick

jdk-11.0.12+7_openj9-0.27.0 Semeru Runtimes* or
jdk-11.0.10+9_openj9-0.24.0 AdoptOpenJDK

The former is "Normal" while the latter is "Large Heap"

Do I download all four files on the right? If so, what do I do with

them?

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600
Mail to: 7310 Innovation Blvd, Suite 104
Ft. Wayne, IN 46818
Ship to: 7310 Innovation Blvd, Dock 9C
Ft. Wayne, IN 46818
http://www.dekko.com