@ddimitrov is the correct answer. Put into code it looks like this:
public <T> Class<T> testArray(T[] array) {
return array.getClass().getComponentType();
}
Even more generally, we can test first to see if the type represents an array, and then get its component:
Object maybeArray = ...
Class<?> clazz = maybeArray.getClass();
if (clazz.isArray()) {
System.out.printf("Array of type %s", clazz.getComponentType());
} else {
System.out.println("Not an array");
}
A specific example would be applying this method to an array for which the component type is already known:
String[] arr = {"Daniel", "Chris", "Joseph"};
arr.getClass().getComponentType(); // => java.lang.String
Pretty straightforward!