Java 中的 JapaneseDate toEpochDay()方法，示例

原文:https://www . geesforgeks . org/japanesedate-toepochday-method-in-Java-with-example/

Java . time . chrono . japanesedate类的to pochday()方法用于获取当前日本日期和 1970-01-01 之间存在的纪元天数。

语法:

public long toEpochDay()

参数:该方法不接受任何参数作为参数。

返回值:此方法返回当前回历日期和 1389-10-22 之间存在的纪元天数。

以下是举例说明to pochday()方法的例子:

例 1:

Java 语言(一种计算机语言，尤用于创建网站)

// Java program to demonstrate
// toEpochDay() method

import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.*;

public class GFG {
    public static void main(String[] argv)
    {
        try {
            // Creating and initializing
            // JapaneseDate Object
            JapaneseDate hidate = JapaneseDate.now();

            // Getting no of ephoch days present
            // by using toEpochDay() method
            long length = hidate.toEpochDay();

            // Display the result
            System.out.println("EpochDay : "
                               + length);
        }
        catch (DateTimeException e) {
            System.out.println("passed parameter can"
                               + " not form a date");
            System.out.println("Exception thrown: "
                               + e);
        }
    }
}

Output:

EpochDay : 18365

例 2:

Java 语言(一种计算机语言，尤用于创建网站)

// Java program to demonstrate
// toEpochDay() method

import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.*;

public class GFG {
    public static void main(String[] argv)
    {
        try {
            // Creating and initializing
            // JapaneseDate Object
            JapaneseDate hidate
                = JapaneseDate.of(1970, 01, 01);

            // Getting no of ephoch days present
            // by using toEpochDay() method
            long length = hidate.toEpochDay();

            // Display the result
            System.out.println("EpochDay : "
                               + length);
        }
        catch (DateTimeException e) {
            System.out.println("passed parameter can"
                               + " not form a date");
            System.out.println("Exception thrown: "
                               + e);
        }
    }
}

Output:

EpochDay : 0

参考:https://docs . Oracle . com/javase/9/docs/API/Java/time/chrono/japanesedate . html # toEpochDay–

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