LocalDate类的getDayOfYear()方法 (LocalDate Class getDayOfYear() method)

• getDayOfYear() method is available in java.time package.

  getDayOfYear()方法在java.time包中可用。

• getDayOfYear() method is used to get the day-of-year field value of this LocalDate object.

  getDayOfYear()方法用于获取此LocalDate对象的年份字段值。

• getDayOfYear() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  getDayOfYear()方法是一个非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• getDayOfYear() method does not throw an exception at the time of getting the day of the year.

  getDayOfYear()方法在获取一年中的某天时不会引发异常。

Syntax:

句法：

    public int getDayOfYear();

Parameter(s):

参数：

• None

  没有

Return value:

返回值：

The return type of this method is int, it returns the value day-of-year field and the number of days in a year starts from 1 to 365 (i.e. for Non-Leap Year) or from 1 to 366 (i.e. for Leap Year).

此方法的返回类型为int ，它返回值“年的年”字段，并且一年中的天数从1到365(即非-年)或1到366(即Le年)开始)。

Example:

例：

// Java program to demonstrate the example 
// of getDayOfYear() method 
// of LocalDate
import java.time.*;
public class GetDayOfYearOfLocalDate {
public static void main(String args[]) {
// Instantiates two LocalDate
LocalDate l_da1 = LocalDate.parse("2007-04-05");
LocalDate l_da2 = LocalDate.now();
// Display l_da1,l_da2
System.out.println("LocalDate l_da1 and l_da2: ");
System.out.println("l_da1: " + l_da1);
System.out.println("l_da2: " + l_da2);
System.out.println();
// Here, this method gets the value for
// the field day-of-year in this
// date object l_da1 
int doy = l_da1.getDayOfYear();
// Display doy
System.out.println("l_da1.getDayOfYear(): " + doy);
// Here, this method gets the value for
// the field day-of-year in this
// date object l_da2 
doy = l_da2.getDayOfYear();
// Display doy
System.out.println("l_da2.getDayOfYear(): " + doy);
}
}

Output

输出量

LocalDate l_da1 and l_da2: 
l_da1: 2007-04-05
l_da2: 2020-05-29l_da1.getDayOfYear(): 95
l_da2.getDayOfYear(): 150

翻译自: https://www.includehelp.com/java/localdate-getdayofyear-method-with-example.aspx