Question

I have a method, which I cannot change, that takes a T[] array.

I need to “toString()” element [i] of array, not knowing the type of T in advance.

For all objects, I could call toString() but T[] could be an array of primitives and this does not make sense:

int i = 0;
i.toString(); // nonsense

What can I do?

Answer 1

In response to:

T[] could be an array of primitives and this does not make sense

Generic types cannot be primitives, which guarantees that the array will always be an array of objects. Since every object extends Object it will have a toString method.