Java 9中ofInstant()方法的重要性？
在Java9中，引入了ofInstant()方法进行转换。它是LocalDate，LocalTime和LocalDateTime类的静态方法。此方法将java.time.Instant对象转换为需要时区的LocalDate，形式为java.time.ZoneId。
语法
public static LocalTime ofInstant(Instant instant, ZoneId zone) public static LocalDate ofInstant(Instant instant, ZoneId zone) public static LocalDateTime ofInstant(Instant instant, ZoneId zone)
示例
import java.time.LocalDate;
import java.time.LocalTime;
import java.time.LocalDateTime;
import java.time.Instant;
import java.time.ZoneId;
public class OfInstantMethodTest {
public static void main(String args[]) { Instant instant = Instant.parse("2020-02-05T02:35:15.245Z");
System.out.println("Instant: " + instant); LocalDate ld = LocalDate.ofInstant(instant, ZoneId.of("Asia/Kolkata"));
System.out.println("LocalDate: " + ld); LocalTime lt = LocalTime.ofInstant(instant, ZoneId.of("Asia/Kolkata"));
System.out.println("LocalTime: " + lt); LocalDateTime ldt = LocalDateTime.ofInstant(instant, ZoneId.of("Asia/Kolkata"));
System.out.println("LocalDateTime: " + ldt);
}
}输出结果
Instant: 2020-02-05T02:35:15.245Z LocalDate: 2020-02-05 LocalTime: 08:05:15.245 LocalDateTime: 2020-02-05T08:05:15.245