Что такое клонирование массивов

int[] original = {1, 2, 3};
int[] copy = original.clone(); // или Arrays.copyOf(original, original.length)

class Person implements Cloneable {
    String name;
    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}

Person[] people = {new Person()};
Person[] deepCopy = Arrays.stream(people)
                          .map(p -> {
                              try { return (Person) p.clone(); }
                              catch (CloneNotSupportedException e) { return null; }
                          })
                          .toArray(Person[]::new);