Java 中带有 Second()方法的 LocalDateTime,示例
原文:https://www . geesforgeks . org/local datetime-with second-method-in-Java-with-examples/
Java 中 LocalDateTime 类的 withSecond() 方法用于获取该 LocalDateTime 的副本,其中秒被更改为秒,并作为参数传递给该方法。该本地日期时间的其余值保持不变。
语法:
public LocalDateTime withSecond(int seconds)
参数:该方法接受单个强制参数秒,该参数指定要在结果本地日期时间实例中设置的秒。这个秒的值可以从 0 到 59。
返回:该函数返回一个本地日期时间实例,将秒更改为秒,作为参数传递给该方法。该本地日期时间的其余值保持不变。
异常:如果秒值无效,函数抛出日期时间异常。
下面的程序说明了 LocalDateTime.withSecond()方法:
程序 1:
// Program to illustrate the withSecond() method
import java.util.*;
import java.time.*;
public class GfG {
public static void main(String[] args)
{
// Get the LocalDateTime instance
LocalDateTime dt = LocalDateTime.now();
// Get the String representation of this LocalDateTime
System.out.println("Original LocalDateTime: "
+ dt.toString());
// Get a new LocalDateTime with seconds 0
System.out.println("New LocalDateTime: "
+ dt.withSecond(0));
}
}
输出:
Original LocalDateTime: 2018-11-30T10:39:52.924
New LocalDateTime: 2018-11-30T10:39:00.924
程序二:
// Program to illustrate the withSecond() method
import java.util.*;
import java.time.*;
public class GfG {
public static void main(String[] args)
{
// Get the LocalDateTime instance
LocalDateTime dt
= LocalDateTime
.parse("2015-04-06T10:15:30");
// Get the String representation of this LocalDateTime
System.out.println("Original LocalDateTime: "
+ dt.toString());
// Get a new LocalDateTime with seconds 59
System.out.println("New LocalDateTime: "
+ dt.withSecond(59));
}
}
输出:
Original LocalDateTime: 2015-04-06T10:15:30
New LocalDateTime: 2015-04-06T10:15:59
参考:T2【https://docs . Oracle . com/javase/10/docs/API/Java/time/local datetime . html # with second(int)
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