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Asked: 2026-06-14T15:01:05+00:00

Ìs it possible to compile file that contains both scala and java code? I’m

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Ìs it possible to compile file that contains both scala and java code?
I’m doing online course and was given java source files, which I need to extend. Do I have to use only Java in already existing files?

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  1. Editorial Team

    You cannot have both Java and Scala in one file. After all it’s either .java or .scala.

    However you are free to:

    • extend Java classes in Scala (and vice-versa)
    • implement Java interfaces in Scala (syntax is the same as for extending traits)
    • extend Scala traits in Java (syntax is the same as for implementing Java interfaces)

    …as long as they are in different files.

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