Java 中的等时日期(Era，int，int)方法，示例
原文:https://www . geesforgeks . org/isochronomics-datyeardayera-int-int-method-in-Java-with-example/
Java . time . chrono . isochronology类的 dateYearDay() 方法用于根据特定时代的 Iso 日历检索本地日期。
语法:
public LocalDate dateYearDay(Era era,
int yearOfEra,
int dayOfYear)
参数:该方法以下列参数为参数。
- Era: is the type era.
- year of the object: is LocalDate.
- Integer year of year field: is LocalDate.
日字段的整数日
返回值:该方法根据特定时代的 Iso 日历返回当地日期。
以下是举例说明 dateYearDay() 方法的例子:
例 1:
// Java program to demonstrate
// dateYearDay() method
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
public class GFG {
public static void main(String[] argv)
{
try {
// creating and initializing
// LocalDate Object
LocalDate hidate = LocalDate.now();
// getting IsoChronology
// used in LocalDate
IsoChronology crono
= hidate.getChronology();
// getting LocalDate for the
// given date and year field
// by using dateYearDay() method
LocalDate date
= crono.dateYearDay(
IsoEra.BCE, 1440, 24);
// display the result
System.out.println("LocalDate is: "
+ date);
}
catch (DateTimeException e) {
System.out.println("passed parameter can "
+ "not form a date");
System.out.println("Exception thrown: " + e);
}
}
}
输出:
LocalDate is: -1439-01-24
例 2:
// Java program to demonstrate
// dateYearDay() method
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
public class GFG {
public static void main(String[] argv)
{
try {
// creating and initializing
// LocalDate Object
LocalDate hidate = LocalDate.now();
// getting IsoChronology
// used in LocalDate
IsoChronology crono
= hidate.getChronology();
// getting LocalDate for the
// given date and year field
// by using dateYearDay() method
LocalDate date
= crono.dateYearDay(
IsoEra.BCE, 0000, 30);
// display the result
System.out.println("LocalDate is: "
+ date);
}
catch (DateTimeException e) {
System.out.println("passed parameter can "
+ "not form a date");
System.out.println("Exception thrown: " + e);
}
}
}
输出:
LocalDate is: 0001-01-30
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