Java中的 IsoChronology isLeapYear() 方法示例

Java.time.chrono.IsoChronology 类的isLeapYear()方法用于区分闰年和非闰年。如果是闰年，则返回 true，否则返回 false。

句法：

public boolean isLeapYear(long prolepticYear)

参数：此方法以prolepticYear作为参数，用于检查是否为闰年。

返回值：如果预测年是闰年，则此方法返回布尔值 true，否则返回 false。

下面是说明isLeapYear()方法的示例：

示例 1：

// Java program to demonstrate
// isLeapYear() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing LocalDate Object
        LocalDate hidate = LocalDate.now();
  
        // getting IsoChronology used in LocalDate
        IsoChronology crono = hidate.getChronology();
  
        // getting id of this Chronology
        // by using isLeapYear() method
        boolean flag = crono.isLeapYear(1444);
  
        // display the result
        if (flag)
            System.out.println("this is leap year");
        else
            System.out.println("this is non leap year");
    }
}

输出：

this is leap year

示例 2：

// Java program to demonstrate
// isLeapYear() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing LocalDate Object
        LocalDate hidate = LocalDate.now();
  
        // getting IsoChronology used in LocalDate
        IsoChronology crono = hidate.getChronology();
  
        // getting id of this Chronology
        // by using isLeapYear() method
        boolean flag = crono.isLeapYear(2005);
  
        // display the result
        if (flag)
            System.out.println("this is leap year");
        else
            System.out.println("this is non leap year");
    }
}

输出：

this is non leap year

参考： https://docs.oracle.com/javase/9/docs/api/ Java/time/chrono/IsoChronology.html#isLeapYear-long-