Java 中的日本年表 eraOf()方法，示例

原文:https://www . geeksforgeeks . org/Japanese 年表-java 中的 eraof-method-with-example/

Java . time . chrono . Japanese 年表类的 eraOf() 方法用于通过使用数值来检索 JapaneseEra。

语法:

public JapaneseEra eraOf(int eraValue)

参数:该方法将整数值作为将要生成日本种子的参数。

返回值:该方法使用数值返回日本时代。

以下是举例说明 eraOf() 方法的例子:

例 1:

// Java program to demonstrate
// eraOf() 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
            // JapaneseDate Object
            JapaneseDate hidate
                = JapaneseDate.now();

            // getting JapaneseChronology
            // used in LocalDate
            JapaneseChronology crono
                = hidate.getChronology();

            // getting JapaneseEra for the
            // given integer value
            // by using eraOf() method
            JapaneseEra era = crono.eraOf(0);

            // display the result
            System.out.println(
                "JapaneseEra is: "
                + era);
        }
        catch (DateTimeException e) {
            System.out.println(
                "JapaneseEra is invalid");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

输出:

JapaneseEra is: Taisho

例 2:

// Java program to demonstrate
// eraOf() 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
            // JapaneseDate Object
            JapaneseDate hidate
                = JapaneseDate.now();

            // getting JapaneseChronology
            // used in LocalDate
            JapaneseChronology crono
                = hidate.getChronology();

            // getting JapaneseEra for the
            // given integer value
            // by using eraOf() method
            JapaneseEra era = crono.eraOf(2);

            // display the result
            System.out.println("JapaneseEra is: "
                               + era);
        }
        catch (DateTimeException e) {
            System.out.println(
                "JapaneseEra is invalid");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

输出:

JapaneseEra is: Heisei

参考:https://docs . Oracle . com/javase/9/docs/API/Java/time/chrono/Japanese seriogram . html # eraOf-int-

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