UnsupportedClassVersionError

Changing Java language level to run compiled code on older runtimes I’m working on some Java project. I use IntelliJ IDEA and deciced to go with Oracle’s OpenJDK-18. But… this runtime is available by default only during compilation in the IDE. In the system I have OpenJDK-11. Trying to run code compiled by JDK-18 on JDK-11 gives me the following message: To overcome this go to module settings (or Project…

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