Built-in method

Leap
Leap in Java 
import java.time.Year;

class Leap {

    boolean isLeapYear(int year) {
        return Year.of(year).isLeap();
    }
}

This may be considered a "wicked cheat" for this exercise, by simply passing the year into the isLeap() method of the Year class. Although it is not in the spirit of this exercise, isLeap() would be the idiomatic way to determine if a year is a leap year in the "real world".

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.*;

class Leap {

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

Use the plusDays method.