Java program to check year is a leap year or not

 

Java program to check year is a leap year or not using if-else and java ternary operator

We are going to create a java program to check that the input year is a leap year or not. First, we will use the java if-else condition to check leap year, and then we also use the java ternary operator to check leap year.

A year is a leap year if the input year is divisible by 400 or the input year is divisible by 4 but not divisible by 100.

Leap year examples -

1. Input year 2000  -> Divisible by 400, so it is a leap year.

2. Input year 2020  -> Divisible by 4 but not divisible by 100, so it is a leap year.

3. Input year 2002  -> Not divisible by 4 and not divisible 400, so it is not a leap year.

4. Input year 2012  -> Divisible by 4 but not divisible by 100, so it is a leap year.

5. Input year 1998  -> Not divisible by 4 and not divisible 400, so it is not a leap year.

1. public class LeapYear {
2.  
3. /**
4.   * Check year is a leap year or not
5.   *
6.   * @param args
7.   */
8. public static void main(String[] args) {
9.  
10. // using java if-else
11. System.out.println("==== using java if-else ===");
12. checkLeapYear(2000); // Output -> 2000 is a leap year
13. checkLeapYear(2020); // Output -> 2020 is a leap year
14. checkLeapYear(2002); // Output -> 2002 is a leap year
15. checkLeapYear(2012); // Output -> 2012 is a leap year
16. checkLeapYear(1998); // Output -> 1998 is a leap year
17.  
18. // using java ternary operator
19. System.out.println("==== using java ternary operator ===");
20. checkLeapYearUsingTernary(2000); // Output -> 2000 is a leap year
21. checkLeapYearUsingTernary(2020); // Output -> 2020 is a leap year
22. checkLeapYearUsingTernary(2002); // Output -> 2002 is a leap year
23. checkLeapYearUsingTernary(2012); // Output -> 2012 is a leap year
24. checkLeapYearUsingTernary(1998); // Output -> 1998 is a leap year
25. }
26.  
27. // using java if-else
28. private static void checkLeapYear(int year) {
29. if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
30. System.out.println(year + " is a leap year");
31. } else {
32. System.out.println(year + " is not a leap year");
33. }
34. }
35.  
36. // using java ternary operator
37. private static void checkLeapYearUsingTernary(int year) {
38. String result = (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0) ?

39. year + " is a leap year" : year + " is not a leap year";

40. System.out.println(result);
41. }
42. }

Output -

====  using java if-else ===

2000 is a leap year

2020 is a leap year

2002 is not a leap year

2012 is a leap year

1998 is not a leap year

====  using java ternary operator ===

2000 is a leap year

2020 is a leap year

2002 is not a leap year

2012 is a leap year

1998 is not a leap year