plusDays method

Leap
Leap in Java 
import java.time.*;

class Leap {

    boolean isLeapYear(int year) {
        return LocalDate.of(year, Month.FEBRUARY, 28).plusDays(1).getDayOfMonth() == 29;
    }
}

This approach may be considered a "cheat" for this exercise. By adding a day to February 28th for the year, you can see if the new day is the 29th or the 1st. If it is the 29th, then the year is a leap year. This is done by using the plusDays() and getDayOfMonth() methods of the LocalDate class.

13th Nov 2024 · Found it useful?

Other Approaches to Leap in Java

Other ways our community solved this exercise
boolean isLeapYear(int year) {
    return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
}
Boolean chain

Use a chain of boolean expressions. 

boolean isLeapYear(int year) {
    return year % 100 == 0 ? year % 400 == 0 : year % 4 == 0;
}
Ternary operator

Use a ternary operator of boolean expressions. 

import java.time.Year;

class Leap {

    boolean isLeapYear(int year) {
        return Year.of(year).isLeap();
    }
}
Built-in method

Use the built-in method.