Classification: Confidential

<quote>
... but in 2019 Oracle also changed it's licensing such that the Oracle Java no 
longer free for commercial use ...
*** omitted tet ***
...Now why it's taken IBM >2 years to support Java 11, I don't know.
</quote>

Probably they don’t want to pay the bill <G>

-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of 
Scott Chapman
Sent: Saturday, June 19, 2021 7:22 AM
To: [email protected]
Subject: Re: Java 8 (latest!) and TLSv1.3 - anyone got it working?

[CAUTION: This Email is from outside the Organization. Unless you trust the 
sender, Don’t click links or open attachments as it may be a Phishing email, 
which can steal your Information and compromise your Computer.]

For those wondering: Java 9 changed some fundamental things and is not 
necessarily drop-in compatible with Java 8, making migration from 8 to 9 (or 
above) something that can take some real effort. There were always potential 
issues going between Java versions but the 8 to 9 transition is especially 
painful.

After 9 they also went to a 6 month release cadence, but most of those releases 
are only supported for 6 months. But about every 3 years there's a long term 
support (LTS) release that's supported for years. Version 11 was the first of 
those, 17 (this fall) will be the next.

Not really important on z/OS in particular, but in 2019 Oracle also changed 
it's licensing such that the Oracle Java no longer free for commercial use. 
Those using Java commercially can continue to use OpenJDK (the reference 
implementation) or one of the other free alternatives though.

In short "they" made a mess of Java after 8. There's reasons for it and there's 
some good things in Java 9+, but... things are definitely different.

Now why it's taken IBM >2 years to support Java 11, I don't know. One guess 
might be that they haven't put much effort into it because there's not a lot of 
demand for it as long as 8 is viable and getting people to migrate to 11 from 8 
may be non-trivial. (How many sites are still using old COBOL compilers despite 
better more modern alternatives being available?) At this point OpenJDK shows 
Java 8 being supported until "at least May 2026" and Java 11 until "at least 
October 2024". So given that 17 is potentially coming available in September, 
and given that I think the migration from 11 to 17 will likely be easier than 8 
to 9+, I wouldn't be surprised if they just hold off for 17.

Scott Chapman

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