Suppose you are implementing the comparable interface in a class representing a Person, where the ordering is based on the age of the person. Write a compareTo method for this class. You may assume that there is an instance variable called age and an accessor method called getAge.

What will be an ideal response?

```
public int compareTo(Object o) {
Person p = (Person) o;
return this.getAge() - p.getAge();
}
```