On 12 January 2013 10:40, Paul Gilmartin <[email protected]> wrote:
> What is the provenance of z/OS Java? Is it maintained by Oracle (I suspect > not), > or by IBM from source code obtained from Oracle (on what terms?) There was an IBM Systems Journal article (Dillenberger et al, Vol 39, No 1, 2000) on Java for OS/390 that said that the IBM OS/390 implementation was based on Sun's, in contrast to that for OS/400. "So we decided that we would use the reference implementation as the base and fix the problems—this would be less expensive than attempting to build a Java-compliant virtual machine “from scratch” as the Operating System/400* (OS/400*) team had done." Of course the current z/OS Java may not be a descendant of that implementation, particularly in light of the great deal of JIT compiler work that seems to have gone on in IBM, but my guess is that it is. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
