Java 中的 temporalaadjusters first dayofnextmonth()方法，带示例

原文:https://www . geesforgeks . org/temporalaadjusters-first dayofnextmonth-method-in-Java-with-examples/

一个临时调整类的 firstDayOfNextMonth() 方法用于返回“下个月的第一天”临时调整对象，该对象返回一个设置为下个月的第一天的新的 Date 对象。

语法:

public static TemporalAdjuster firstDayOfNextMonth()

参数:此方法不接受任何内容。

返回值:此方法返回下个月的第一天调整器，不为空。

下面的程序说明了临时调整的第一天第一个月()方法: 程序 1:

// Java program to demonstrate
// TemporalAdjusters.firstDayOfNextMonth()

import java.time.LocalDate;
import java.time.temporal.TemporalAdjuster;
import java.time.temporal.TemporalAdjusters;

public class GFG {
    public static void main(String[] args)
    {

        // get TemporalAdjuster with first day
        // of next month adjuster
        TemporalAdjuster temporalAdjuster
            = TemporalAdjusters.firstDayOfNextMonth();

        // using adjuster for local date time
        LocalDate localDate
            = LocalDate.of(2020, 05, 11);
        LocalDate firstDayOfNextMonth
            = localDate.with(temporalAdjuster);

        // print
        System.out.println("First day of next "
                           + "month for localdate "
                           + localDate + ": "
                           + firstDayOfNextMonth);
    }
}

Output:

First day of next month for localdate 2020-05-11: 2020-06-01

程序 2:

// Java program to demonstrate
// TemporalAdjusters.firstDayOfNextMonth() method

import java.time.LocalDate;
import java.time.temporal.*;

public class GFG {
    public static void main(String[] args)
    {

        // get TemporalAdjuster with first day
        // of next month adjuster
        TemporalAdjuster temporalAdjuster
            = TemporalAdjusters
                  .firstDayOfNextMonth();

        // using adjuster for local date-time
        LocalDate localDate
            = LocalDate.of(2010, 12, 29);
        LocalDate firstDayOfNextMonth
            = localDate.with(temporalAdjuster);

        // print
        System.out.println(
            "First day of next "
            + "month for localdate "
            + localDate + ": "
            + firstDayOfNextMonth);
    }
}

Output:

First day of next month for localdate 2010-12-29: 2011-01-01

参考文献:https://docs . Oracle . com/javase/10/docs/API/Java/time/format/temporalaadjusters . html

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