// Adapted from Sierra and Bates, Head First Java // You need not use all of the lines below, and you may use duplicates. } } else if (year % 100 != 0) { if (year % 4 != 0) { if (year % 400 != 0) { if (year % 100 == 0) { if (year % 4 == 0) { if (year % 400 == 0) { System.out.println (year + " is a leap year."); System.out.println (year + " is not a leap year.");