java 根据类名示例化类

LocalDateTime类的Instant()方法 (LocalDateTime Class ofInstant() method)

• ofInstant() method is available in java.time package.

  ofInstant()方法在java.time包中可用。

• ofInstant() method is used to create an instance of LocalDateTime from the given instant and zone.

  ofInstant()方法用于从给定的瞬间和区域创建LocalDateTime的实例。

• ofInstant() method may throw an exception at the time of representing the object.

  ofInstant()方法在表示对象时可能会引发异常。

  DateTimeException – This exception may throw when this LocalDateTime value reaches out of the min or max instant.

  DateTimeException –当此LocalDateTime值超出最小或最大瞬间时，可能会引发此异常。

• ofInstant() method is a static method and it is accessible with the class name and if we try to access these methods with the class object then we will not get an error.

  ofInstant()方法是一个静态方法，可以使用类名进行访问，如果我们尝试使用类对象访问这些方法，则不会出错。

Syntax:

句法：

public static LocalDateTime ofInstant(Instant ins, ZoneId zo);

Parameter(s):

参数：

• Instant ins – represents the instant by which we are creating LocalDateTime.

  Instant ins –表示我们创建LocalDateTime的瞬间。

• ZoneId zo – represents the time zone.

  ZoneId zo –代表时区。

Return value:

返回值：

The return type of this method is LocalDateTime, it returns the LocalDateTime that holds the value creates from the given Instant and zone.

该方法的返回类型为LocalDateTime ，它返回LocalDateTime，该LocalDateTime包含从给定的Instant和zone创建的值。

Example:

例：

// Java program to demonstrate the example 
// of ofInstant(Instant ins, ZoneId zo) method 
// of LocalDateTime
import java.time.*;
public class OfInstantOfLocalDateTime {
public static void main(String args[]) {
// Instantiates a ZoneId and
// Instant
ZoneId zo = ZoneId.of("Africa/Accra");
Instant ins = Instant.parse("2006-04-03T05:10:15.00Z");
// Here, this method creates an instance of 
// LocalDateTime by using the given
// Instant and ZoneId
LocalDateTime da_ti = LocalDateTime.ofInstant(ins, zo);
// Display da_ti
System.out.print("LocalDateTime.ofInstant(ins,zo): ");
System.out.println(da_ti);
}
}

Output

输出量

LocalDateTime.ofInstant(ins,zo): 2006-04-03T05:10:15

翻译自: https://www.includehelp.com/java/localdatetime-ofinstant-method-with-example.aspx

java 根据类名示例化类