In this Java 101 tutorial, I’ve explained how interfaces differ from classes, and showed you how to declare, implement, and extend interfaces in your Java programs.

Java’s interface language feature confuses many Java newbies. Many mistakenly assume that interfaces only sidestep Java’s failure to support multiple implementation inheritance. In reality ...

Googling for "Java return multiple values" reveals people like some "javatuples" library. I have not played with records yet, but if you are using Java >= 16, I would test using records.

Neither of the two "big" programming languages to come out in the last few years, Java or C#, make use of multiple implementation inheritance, providing only interface inheritance.