Multiple return values

I've always found it weird that a function can take multiple arguments, but it can only return a single value. I guess you can make an Object array, and use that as a hacky workaround to return multiple values (of different data types instead of them all being the same, i.e. int[]).
https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html
What are your thoughts on having return values of different data types?

Functional programming apparently does away with return statements entirely, what's up with that?

I've always found it weird that a function can take multiple arguments, but it can only return a single value

Functions can only take a single argument and return a single value.

Functional programming apparently does away with return statements entirely, what's up with that?

Instead of writing return x you just write x.