Java闰年判断的方法有哪些

使用简单的if语句判断：

public static boolean isLeapYear(int year) {    if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)) {        return true;    } else {        return false;    }}

public static boolean isLeapYear(int year) {    return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)) ? true : false;}

import java.util.Calendar;public static boolean isLeapYear(int year) {    Calendar cal = Calendar.getInstance();    cal.set(Calendar.YEAR, year);    return cal.getActualMaximum(Calendar.DAY_OF_YEAR) > 365;}