How can sort the data in the presidents.txt file, by last name or by date of birth in java. This problem will investigate one way to allow the user to easily sort by either field. (a) Create a President class which contains fields to store the name and birth date of a President (you can just use three int fields for the birth date). In addition, add a static field named sortBy and two static constants LASTNAME and BIRTHDATE. Add a method to allow the user to set the sortBy field to either of these constants. (b) Now modify the President class so that it implements the Comparable interface. The compareTo method should make use of the sortBy field. (c) Now write a driver program that opens the president.txt file, asks the user how they want the information sorted, and then sorts the data appropriately using Insertion Sort and writes it to the presidents_sorted.txt file.

The presidents.txt file

Eisenhower, Dwight David

10 14 1890

Kennedy, John Fitzgerald

05 29 1917

Johnson, Lyndon Baines

08 27 1908

Nixon, Richard Milhouse

01 09 1913

Ford, Gerald Rudolph

07 14 1913

Carter, Jimmy

10 01 1924

Reagan, Ronald Wilson

02 06 1911

Bush, George Herbert Walker

06 12 1924

Clinton, Bill J.

08 19 1946

Bush, George W.

07 06 1946

Obama, Barack Hussein

08 04 1961

Trump, Donald John

06 14 1946