I am making a game in Greenfoot 2.4.2 in which a boy save trees, he has to use the stop button to stop the man cutting trees and my canSee method is not working, a3 is the boy , a4 is the stop button and a2 is the tree cutter ,i want that if a3 touches a4 then a2 is automatically removed or eaten

Write a program that prints the day number of the year, given the date in the form month-day-year. for example, if the input is 1-1-2006, the day number is 1; if the input is 12-25-2006, the day number is 359. the program should check for a leap year. a year is a leap year if it is divisible by 4, but not divisible by 100. for example, 1992 and 2008 are divisible by 4, but not by 100. a year that is divisible by 100 is a leap year if it is also divisible by 400. for example, 1600 and 2000 are divisible by 400. however, 1800 is not a leap year because 1800 is not divisible by 400.