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From: Andreas Leitgeb <avl@logic.at>
Newsgroups: comp.lang.java.programmer
Subject: Re: more porting issues to Java 11
Date: Wed, 10 Apr 2019 18:08:19 -0000 (UTC)
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Next update:    (tl;dr? SimpleDateFormat also changed behaviour)

Synchronous with my own sorry attempts, there was also some action on
glassfish side. Some user posted a PR that made the glassfish ORB
compileable with maven and jdk 11. (It's not yet merged, and it
depends on some other package that isn't yet released to maven repo,
thus needs some extra hoop-diving to let "mvn" find it, but there is
some progress).

For now I only succeeded in getting un-encrypted Corba working -
to use encryption I would now need a client-side keystore (didn't
need that back with an older version of JacORB).
Not ok for production, of course, but enough to allow me to check
other corners of the application:


Next obstacle was SimpleDateFormat:  jdk-8 had no problem at all with
parsing a (German style) "10.04.2019 19:44:45" string with a DateFormat
defined like this: (SSCCE and results further down)
  final int dfMed = DateFormat.MEDIUM; final Locale l_de=new Locale("de","DE");
  DateFormat df   =  DateFormat.getDateTimeInstance(dfMed,dfMed,l_de);

For jdk11, the string would now need a comma "," between date and time 
parts. the blank isn't acceptable any more.


--- snip SSCCE: Foo.java ---
import java.text.DateFormat;
import java.util.Date;
import java.text.ParseException;
import java.util.Locale;

class Foo {
   public static void main(String... args) {
      final int dfMed = DateFormat.MEDIUM;
      final Locale l_de=new Locale("de","DE");
      DateFormat     dfM = DateFormat.getDateTimeInstance(dfMed,dfMed,l_de);
      dfM.setLenient(true);

      String text = "10.04.2019 19:44:45";

      try {
         Date result = dfM.parse(text);
         System.out.println( result );
      } catch (ParseException dfe) {
         System.out.println( dfe );
      }
   }
}
--- end snip --- 
jdk-8:  Wed Apr 10 19:44:45 CEST 2019
jdk-11: java.text.ParseException: Unparseable date: "10.04.2019 19:12:04"
        (That it expected a comma, I learned from a debugging session)