Java中的 ZoneOffsetTransition getInstant() 方法与示例

Java.time.zone.ZoneOffsetTransition类的getInstant()方法用于获取表示两个区域偏移之间转换的即时类型对象。

句法：

public Instant getInstant()

参数：此方法不接受任何参数。

返回值：此方法返回表示两个区域偏移之间转换的即时类型对象。

以下是说明getInstant()方法的示例：

示例 1：

// Java program to demonstrate
// getInstant() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.zone.*;
  
public class GFG {
    public static void main(String[] argv)
    {
  
        // creating and initializing
        // the object of LocalDateTime
        LocalDateTime loc
            = LocalDateTime.of(
                1999, 04, 25,
                03, 24, 45, 0);
  
        // creating and initializing
        // the object of ZoneOffset
        ZoneOffset off1
            = ZoneOffset.ofTotalSeconds(8);
  
        // creating and initializing
        // the object of ZoneOffset
        ZoneOffset off2
            = ZoneOffset.ofTotalSeconds(12);
  
        // creating and initializing
        // ZoneOffsetTransition Object
        ZoneOffsetTransition zonetrans1
            = ZoneOffsetTransition.of(
                loc, off1, off2);
  
        // getting the instant between two transition
        // by using getInstant() method
        Instant inst = zonetrans1.getInstant();
  
        // display the result
        System.out.println("Instant : " + inst);
    }
}

输出：

Instant : 1999-04-25T03:24:37Z

示例 2：

// Java program to demonstrate
// getInstant() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.zone.*;
  
public class GFG {
    public static void main(String[] argv)
    {
  
        // creating and initializing
        // the object of LocalDateTime
        LocalDateTime loc
            = LocalDateTime.of(
                1999, 04, 25,
                03, 24, 45, 0);
  
        // creating and initializing
        // the object of ZoneOffset
        ZoneOffset off1
            = ZoneOffset.ofTotalSeconds(12);
  
        // creating and initializing
        // the object of ZoneOffset
        ZoneOffset off2
            = ZoneOffset.ofTotalSeconds(8);
  
        // creating and initializing
        // ZoneOffsetTransition Object
        ZoneOffsetTransition zonetrans1
            = ZoneOffsetTransition.of(
                loc, off1, off2);
  
        // getting the instant between two transition
        // by using getInstant() method
        Instant inst = zonetrans1.getInstant();
  
        // display the result
        System.out.println("Instant : " + inst);
    }
}

输出：

Instant : 1999-04-25T03:24:33Z

参考： https://docs.oracle.com/javase/9/docs/api/ Java/time/zone/ZoneOffsetTransition.html#getInstant–