Java中的 OffsetDateTime withDayOfMonth() 方法及示例
Java中 OffsetDateTime 类的withDayOfMonth()方法返回此 OffsetDateTime 的副本,其中日期按参数中指定的方式更改。
句法:
public OffsetDateTime withDayOfMonth(int dayOfMonth)
参数:此方法接受单个参数dayOfMonth ,该参数指定要在结果中设置的日期,范围从 1 到 28-31。
返回值:它根据请求的日期返回一个 OffsetDateTime,并且不为空。
异常:当月份的日期值无效或该特定年份的月份的月份日期无效时,程序会抛出DateTimeException 。
下面的程序说明了withDayOfMonth()方法:
方案一:
// Java program to demonstrate the withDayOfMonth() method
import java.time.OffsetDateTime;
public class GFG {
public static void main(String[] args)
{
// Parses the date1
OffsetDateTime date1
= OffsetDateTime
.parse(
"2018-12-12T13:30:30+05:00");
// Prints dates
System.out.println("Date1: " + date1);
// Changes the day of month
System.out.println("Date1 after altering day-of-month: "
+ date1.withDayOfMonth(20));
}
}
输出:
Date1: 2018-12-12T13:30:30+05:00
Date1 after altering day-of-month: 2018-12-20T13:30:30+05:00
方案二:
// Java program to demonstrate the withDayOfMonth() method
import java.time.OffsetDateTime;
public class GFG {
public static void main(String[] args)
{
try {
// Parses the date1
OffsetDateTime date1
= OffsetDateTime
.parse(
"2018-12-12T13:30:30+05:00");
// Prints dates
System.out.println("Date1: " + date1);
// Changes the day of month
System.out.println("Date1 after altering day-of-month: "
+ date1.withDayOfMonth(32));
}
catch (Exception e) {
System.out.println("Exception: " + e);
}
}
}
输出:
Date1: 2018-12-12T13:30:30+05:00
Exception: java.time.DateTimeException:
Invalid value for DayOfMonth (valid values 1 - 28/31): 32
参考:https: Java/time/OffsetDateTime.html#withDayOfMonth(int)