Let's learn about Calendar and Date in java.
Using TDD, create a class with a method
public String getBirthDay(Date birthdate) {}
which will return the day of the week when someone was born.
For example: if given date is 2020-03-01 (March 1, 2020), then the birth day is Sunday.
The return of the method should be "Sunday".
Using TDD, create a class with a method
public int computeAge(Date birthdate) {}
which will return the age of someone given the birthdate.