Java中的 ZoneOffsetTransition getOffsetAfter() 方法与示例

Java.time.zone.ZoneOffsetTransition类的getOffsetAfter()方法用于获取转换发生后第二个偏移区域的偏移值。第一个和第二个偏移量是指在创建 ZoneOffsetTransition 对象时传递的值。

句法：

public ZoneOffset getOffsetAfter()

参数：此方法不接受任何参数。

返回值：此方法返回发生转换后第二个区域偏移的偏移值。它不返回 Null。

下面是说明getOffsetAfter()方法的示例：

示例 1：

// Java program to demonstrate
// getOffsetAfter() 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 offset after value
        // by using getOffsetAfter() method
        ZoneOffset off
            = zonetrans1.getOffsetAfter();
  
        // Display the result
        System.out.println(
            "Zoneoffset after transition : "
            + off);
    }
}

输出：

Zoneoffset after transition : +00:00:12

示例 2：

// Java program to demonstrate
// getOffsetAfter() 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 offset after value
        // by using getOffsetAfter() method
        ZoneOffset off
            = zonetrans1.getOffsetAfter();
  
        // Display the result
        System.out.println(
            "Zoneoffset after transition : "
            + off);
    }
}

输出：

Zoneoffset after transition : +00:00:08

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