URGENTTTT please answer fastt

A-(35%) 1-Create a class Date with three instance variables (day, month and year) of type int, The class also contains: 2-A function toString that returns a String date, month and year with separator"/" ex: the result will be date/month/year (5 %) 4-A function addYear with parameter year of type int, the method return year (instance variable) + year (parameter) (10 %) 5- A default constructor that fill the day with value 23, month 03 and year 2020 -a non-default constructor that fill the instance variables (10%)