Java中的 TemporalAdjusters lastDayOfMonth() 方法及示例

TemporalAdjusters 类的lastDayOfMonth()方法用于返回“本月的最后一天”TemporalAdjuster 对象，该对象返回一个设置为该月最后一天的新 Date 对象。

句法：

public static TemporalAdjuster lastDayOfMonth()

参数：此方法不接受任何内容。

返回值：该方法返回月度调整器的最后一天，不为空。

下面的程序说明了 TemporalAdjusters.lastDayOfMonth() 方法：
方案一：

// Java program to demonstrate
// TemporalAdjusters.lastDayOfMonth()
  
import java.time.LocalDate;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // get TemporalAdjuster with last day
        // of the month adjuster
        TemporalAdjuster temporalAdjuster
            = TemporalAdjusters.lastDayOfMonth();
  
        // using adjuster for local date-time
        LocalDate localDate
            = LocalDate.of(2020, 05, 11);
        LocalDate lastDayOfMonth
            = localDate.with(temporalAdjuster);
  
        // print
        System.out.println("last day of the "
                           + "month for localdate "
                           + localDate + ": "
                           + lastDayOfMonth);
    }
}

输出：

last day of the month for localdate 2020-05-11: 2020-05-31

方案二：

// Java program to demonstrate
// TemporalAdjusters.lastDayOfMonth() method
  
import java.time.LocalDate;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // get TemporalAdjuster with last day
        // of the month adjuster
        TemporalAdjuster temporalAdjuster
            = TemporalAdjusters
                  .lastDayOfMonth();
  
        // using adjuster for local date-time
        LocalDate localDate
            = LocalDate.of(2010, 12, 29);
        LocalDate lastDayOfMonth
            = localDate.with(temporalAdjuster);
  
        // print
        System.out.println("last day of the "
                           + "month for localdate "
                           + localDate + ": "
                           + lastDayOfMonth);
    }
}

输出：

last day of the month for localdate 2010-12-29: 2010-12-31

参考资料：https: Java