I don't know about JEP submission process, but you'd first have to solve the problem that when Java added serialization of parameter names to class files in Java 8, the OpenJDK devs explicitly decided *not* to expose them for the JDK itself, on the grounds that they didn't want parameter names to become part of the API. That's why you have to pass -parameters to javac to get the new feature.
Adding named parameters to the Java language is probably a fair bit of work. You'd need to build consensus for it on the relevant mailing lists and with the relevant people first, before even getting to the JEP stage I guess. An easier path: figure out how to get parameter names as part of the JDK API and then work with the JetBrains Kotlin team. Kotlin is a very very Java compatible JVM language, and it already supports named parameters by default so they don't have the same hangups about the API compatibility aspect. The Kotlin compiler routinely uses annotation data from Java classes already so that's not a big leap either. I suspect what it will take to get the JDK folks happy with exporting parameter names by default is the ability to overload methods that differ only by parameter names, so if you have a method with bad names then you can add an overload with good names. However this would require a (much smaller) change to the Java language, changes to javac, changes to how the JVM does method linkage (possibly?) and so on. Another possible plan of attack would be to calculate API diffs over time and measure how often parameter names are actually changed. My guess is "not often". If you can prove that they're worried about a relatively uncommon problem then perhaps the JDK maintainers can be convinced to make parameter names a part of the API, perhaps after an API cleanup pass to find obviously bogus names and fix them. Alternatively, given that Java is open source, you can of course go ahead and make your own version of the JRE that exports this data by default. Then you accept the possibility of upstream breaking your code and just swallow it. On Tue, Apr 21, 2015 at 9:52 AM, Tom Eugelink <t...@tbee.org> wrote: > Totally off topic, I apologise, but the subscribers to this list are the > type of people who may have the experience I seek. > > I've been trying to pitch the concept of named parameters for Java 9, but > somehow my JEP is never picked up. I emailed it in twice. Has anyone ever > successfully handed in a JEP? > https://tbeernot.wordpress.com/2013/09/29/the-java-9-named-parameter-pitch/ > > Tom >
