Java程序通过TemporalAdjusters类将LocalDate调整为每月的最后一天
让我们先设置一个日期：
LocalDate localDate = LocalDate.of(2019, Month.JUNE, 15)
现在，将LocalDate调整为每月的最后一天；
LocalDate day = localDate.with(TemporalAdjusters.lastDayOfMonth());
示例
import java.time.LocalDate;
import java.time.Month;
import java.time.temporal.TemporalAdjusters;
public class Demo {
public static void main(String[] args) {
LocalDate localDate = LocalDate.of(2019, Month.JUNE, 15);
System.out.println("Current Date = "+localDate);
System.out.println("Current Month = "+localDate.getMonth());
LocalDate day = localDate.with(TemporalAdjusters.firstDayOfMonth());
System.out.println("First day of month = "+day);
day = localDate.with(TemporalAdjusters.lastDayOfMonth());
System.out.println("Last day of month = "+day);
day = localDate.with(TemporalAdjusters.firstDayOfNextMonth());
System.out.println("First day of next month = "+day);
}
}输出结果
Current Date = 2019-06-15 Current Month = JUNE First day of month = 2019-06-01 Last day of month = 2019-06-30 First day of next month = 2019-07-01