In the release notes for willdfly 10.0.0.Beta1 it is listed that Java 8+ is required. WildFly 10.0.0.Beta1 Release Notes
Does this only refers to the runtime environment the wildfly is running in or is it mandatory that my application (currently build with Java 7) is compiled against Java 8 as well to be deployable?
In the vast majority of cases, your application that is compiled with Java 7 will deploy properly in a Java 8 environment. It's only the rare case where something specific in your code that breaks inside Java 8 where there would be an issue.
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