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**leap year**in the Gregorian calendar has an extra day for February. A leap year has 366 days instead the 365 days of a common year. Leap year is a multiple of ‘4’. Leap year has 29 days for February. Normal year has 28 days for February**Leap year:**366 days, 52 weeks + 2 odd days**Non-Leap year:**365 days, 52 weeks + 1 odd day
The standard logic to determine whether a year is leap year or not is: If the year is divisible by 4 and is not divisible by 100 or the year is divisible by 400 then it’s a leap year.

**PROGRAM**class LeapYear { public static void main(String[] args) { int year = Integer.parseInt(args[0]); boolean isLeapYear = false; if((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0))) { System.out.println("Year "+year+" is a Leap Year"); } else { System.out.println("Year "+year+" is not a Leap Year"); } } }

**OUTPUT 1**C:\>javac LeapYear.java C:\>java LeapYear 2000 Year 2000 is a Leap Year

**OUTPUT 2**C:\>javac LeapYear.java C:\>java LeapYear 2015 Year 2015 is not a Leap Year

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