java.util.GregorianCalendar.isLeapYear()方法确定作为参数传递给函数的给定年份是否为leap年,如果给定年份为a年,则返回true,否则返回false。
用法:
public boolean isLeapYear(int year)
参数:该函数接受单个整数参数year,该年份表示该函数需要检查是否为a年的年份。
返回值:该函数返回一个布尔值。如果作为参数传递的年份是a年,则返回true和false。
例子:
Input : 2016 Output : true Input : 2018 Output : false
以下示例程序旨在说明Java中的java.util.GregorianCalendar.isLeapYear()函数:
示例1:
// Java Program to illustrate isLeapYear() function
// of GregorianCalendar
import java.io.*;
import java.util.*;
class GFG {
public static void main(String[] args) {
// Create a new calendar
GregorianCalendar c = (GregorianCalendar)
GregorianCalendar.getInstance();
// Display the current date and time
System.out.println("Current Date and Time : "
+ c.getTime());
int year = c.get(GregorianCalendar.YEAR);
if(c.isLeapYear(year))
{
System.out.println(year +
" is leap year");
}
else
{
System.out.println(year +
" is Not a leap year");
}
}
}
输出:
Current Date and Time : Fri Jul 27 11:53:39 UTC 2018 2018 is Not a leap year
示例2:
// Java Program to illustrate isLeapYear() function
// of GregorianCalendar
import java.io.*;
import java.util.*;
class GFG {
public static void main(String[] args) {
// Create a new calendar
GregorianCalendar c = (GregorianCalendar)
GregorianCalendar.getInstance();
// Display the current date and time
System.out.println("" + c.getTime());
// Modifying the current calender
c.add((GregorianCalendar.MONTH), -30);
int year = c.get(GregorianCalendar.YEAR);
if(c.isLeapYear(year))
{
System.out.println(year + " is leap year");
}
else
{
System.out.println(year + " is Not a leap year");
}
}
}
输出:
Fri Jul 27 11:53:41 UTC 2018 2016 is leap year
参考:https://docs.oracle.com/javase/7/docs/api/java/util/GregorianCalendar.html#isLeapYear()
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注:本文由纯净天空筛选整理自RICHIK BHATTACHARJEE大神的英文原创作品 GregorianCalendar isLeapYear() Method in Java。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。