It just shows how little experience you have porting anything beyond Java 7 into Android Java.
> Only the bytecode format and runtime are different, but that's no worse than how J2ME was, with SonyEricsson/Samsung/$OEM having their own custom packages (which Sun/Oracle approved of.)
Yet that is the whole sales pitch of Android that it isn't as fragmented as J2ME was.
Also you missed the part of SavaJe OS being on the path for making SE available on mobile and Java 8 introduced Embedded Compact Profiles, whose APIs aren't fully available on Android to this day.
They lie to the public that they use OpenJDK, when the truth mirrored on Gerrit code reviews is that they cherry pick features, tracking down which Android version supports what from Standard Java is a painful detective work.
To add to it, the fellowship of Kotlin cleverly misuses their broken Android Java to sell Kotlin features, instead of comparing it with the real deal.
Perhaps that's because it is not? Google aren't adding packages to the java.* namespace, and the language is 100% compatible with Oracle's compiler. Only the bytecode format and runtime are different, but that's no worse than how J2ME was, with SonyEricsson/Samsung/$OEM having their own custom packages (which Sun/Oracle approved of.)
edit: preempting another argument: limiting support to an old version of software/language spec is not a crime, though I'd be happy if Apple could be compelled to update the GPL software they bundle to the latest version (: