Re:Java 18 / JDK 18: General Availability
by th3iedkid on Tuesday March 22, 2022 @11:18AM
(#30767121)
IntelliJ is yet to catchup it seems https://www.jetbrains.com/help/idea/supported-java-versions....
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2022.1 is coming shortly. In any case, one can easily specify jdk18 as the platform to use for a project. The IDE might not recognize some syntax, but the code will compile and run just fine.
I don't think they ever supported a JDK on the day of release, they don't seem to have any sort of inside-track that would allow them to fix bugs before then.