Built-in method

윤년
윤년 Java에서 
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".

2026년 10월 21일 · 유용했나요?

Java의 윤년에 대한 다른 접근법

우리 커뮤니티가 이 연습 문제를 해결한 다른 방법
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.