Java get nice toString for Object reference to some array type [duplicate]

This question already has an answer here:

• What's the simplest way to print a Java array? 33 answers

If I have a reference of type Object and I know that this is an array, but I don't know what kind of array, what is the best way to generate a nice String?

Or in other words, what is the best / nicest implementation for the following method:

private static String anyArrayToString(Object someArray) {
    if (!someArray.getClass().isArray()) {
        throw new IllegalArgumentException("someArray is not an array!");
    }
    return ???;
}

I am aware of the methods from Arrays, namely Arrays.toString(int[]), Arrays.toString(double[]), etc. These do not work here because they are strongly typed and I don't feel like having a big if-else-if cascade. (although this is my plan B if no better solution can be found)

Ideally I would want a method that works on Object references such as System.arraycopy which checks dynamically if the passed reference is an array or not.

why do I not know what kind of array it is?

Because I get the object reference via reflection after iterating over all get-methods of a different object. It is part of a utility method that finds arbitrary differences between two complex objects even if these differences are nested deep.

Thank you very much.