Thanks for the detailed information! I'll have a think about what is best to do.
On Thu, 2 Dec 2021 at 16:49, Michael Rogers <[email protected]> wrote: > Hi Chris, > > I'm not a Jackson developer, just a list subscriber. > > I think the issue here might be Android - specifically Android 6 and > older, which only support the Java 6 API. Any code that calls API > methods that are missing in Java 6 will crash at runtime on older > Android devices. Setting "-source 6 -target 6 -bootclasspath <path to > java 6 standard library>" makes it possible to detect these potential > crashes at compile time. > > Starting with Java 9 I believe it's possible to use "--release 6" > instead, without needing a copy of the older standard library. But maybe > the minimum version for --release has been raised in Java 17, along with > the minimum for -source and -target? > > Another potential issue with --release is that some people may still > want to compile with Java 8, which doesn't have that option. > > If --release isn't feasible, another possibility would be to use Animal > Sniffer, which checks code for compatibility with a specific Java API > version at compile time. The project page says it's in maintenance mode > because --release now does the same job, but if we need to be able to > compile on everything from Java 8 (without --release) to Java 17 (which > may have a minimum --release 7) then maybe Animal Sniffer would still > have a niche? > > http://openjdk.java.net/jeps/247 > > https://www.mojohaus.org/animal-sniffer/ > > Cheers, > Michael > > On 02/12/2021 12:24, Chris Kelley wrote: > > Hello all! > > > > *TL;DR: Will updating the source/target to e.g. Java 1.8 cause problems?* > > > > I help package some of the jackson modules in Fedora. In > > F36 `java-17-openjdk` will be the default system JDK, so I need to make > > sure that all the packages I maintain will work with Java 17. Currently > > Fedora uses Java 11 as default and I have not seen any problems with > > jackson, so I am not expecting any problems with Java 17 either. > > > > However, I see in the source > > <https://github.com/FasterXML/jackson-annotations/blob/2.14/pom.xml#L44> > > that > > > the source target of `jackson-core` and `jackson-annotations` is set to > > Java 1.6, for backwards compatibility reasons - this directive causes > > compilation failure with Java 17 as there is a requirement of Java 1.7+. > > > > If I recompile with Java 1.8, 11 or 17 will the sky fall down? What is > > the reason for holding the source/target at 1.6? > > > > Thanks in advance for any help/historical context/advice! > > > > > > * > > * > > > > > > -- > > You received this message because you are subscribed to the Google > > Groups "jackson-user" group. > > To unsubscribe from this group and stop receiving emails from it, send > > an email to [email protected] > > <mailto:[email protected]>. > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/jackson-user/d89f7760-7bde-471b-acb0-b8f24d4619c4n%40googlegroups.com > > < > https://groups.google.com/d/msgid/jackson-user/d89f7760-7bde-471b-acb0-b8f24d4619c4n%40googlegroups.com?utm_medium=email&utm_source=footer > >. > > -- > You received this message because you are subscribed to a topic in the > Google Groups "jackson-user" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/jackson-user/1TU921jHWJg/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jackson-user/31335422-877c-99da-a7f0-e0adfd9a0373%40briarproject.org > . > -- You received this message because you are subscribed to the Google Groups "jackson-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jackson-user/CAG%2B4EKVuCu6Q%3DPA1vVxKJfCk%3DS2KhYbixrVLAsGNsqbSZLzDVA%40mail.gmail.com.
