How do I calculate someone's age in Java?

Question

I want to return an age in years as an int in a Java method. What I have now is the following where getBirthDate() returns a Date object (with the birth date ;-)):

Answer 1

With Java 8, we can calculate a person age with one line of code:

public int calCAge(int year, int month,int days){             
    return LocalDate.now().minus(Period.of(year, month, days)).getYear();         
}