W dniu 21.03.2025 o 08:04, Andrew Rowley pisze:
On 21/03/2025 11:18 am, Mike Schwab wrote:
Yep.  z/OS has 3 incompatible versions of Java, so far.
What do you mean by incompatible?

I'm developing under Java 17 on a PC, and the same compiled jar runs on the PC and on z/OS under both Java 8 and Java 11. Seems pretty compatible.

Can you elaborate?

I can elaborate. There are many software products using Java. And you *cannot* replace Java 8 with Java 17, because the product will not work.
Example: quite recent IWS (aka TWS) v10. Not to mention still supported 9.x.



Regarding C and portability. It is not only matter of language. It is also matter or environment. You cannot easily move C-written CICS transaction to Windows. Because there is no CICS here. Same for IMS, etc. And of course if you really want to, you can translate COBOL code to Java (OK, the most likely it will be "JOBOL" - Java syntax, COBOL logic), but that code will work it same environment. Moving to another platform is another issue.

--
Radoslaw Skorupka
Lodz, Poland

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