Java OffsetDateTime isAfter()用法及代碼示例

Java中OffsetDateTime類的isAfter()方法檢查該日期是否在指定的日期時間之後，如果是，則返回true。

用法:

public boolean isAfter(OffsetDateTime other)

參數：此方法接受一個參數other，該參數檢查此日期時間是否在另一個日期時間之後。

返回值：如果在另一個日期時間之後，則返回true，否則返回false。

以下示例程序旨在說明isAfter()方法：

示例1:

// Java program to demonstrate the isAfter() method 
  
import java.time.OffsetDateTime; 
import java.time.ZonedDateTime; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Parses the date1 
        OffsetDateTime date1 
            = OffsetDateTime 
                  .parse("2018-12-12T13:30:30+05:00"); 
  
        // Parses the date2 
        OffsetDateTime date2 
            = OffsetDateTime 
                  .parse("2018-12-12T13:30:30+05:00"); 
  
        // Prints both dates 
        System.out.println("Date1: "
                           + date1); 
        System.out.println("Date2: "
                           + date2); 
  
        // Compare both 
        System.out.println("Is Date1 after Date2? "
                           + date1.isAfter(date2)); 
    } 
}

輸出：

Date1: 2018-12-12T13:30:30+05:00
Date2: 2018-12-12T13:30:30+05:00
Is Date1 after Date2? false

程序2：

// Java program to demonstrate the isAfter() method 
  
import java.time.OffsetDateTime; 
import java.time.ZonedDateTime; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Parses the date1 
        OffsetDateTime date1 
            = OffsetDateTime 
                  .parse("2018-12-12T13:30:30+05:00"); 
  
        // Parses the date2 
        OffsetDateTime date2 
            = OffsetDateTime 
                  .parse("2015-12-12T13:30:30+05:00"); 
  
        // Prints both dates 
        System.out.println("Date1: "
                           + date1); 
        System.out.println("Date2: "
                           + date2); 
  
        // Compare both 
        System.out.println("Is Date1 after Date2? "
                           + date1.isAfter(date2)); 
    } 
}

輸出：

Date1: 2018-12-12T13:30:30+05:00
Date2: 2015-12-12T13:30:30+05:00
Is Date1 after Date2? true

參考： https://docs.oracle.com/javase/10/docs/api/java/time/OffsetDateTime.html#isAfter(java.time.OffsetDateTime)

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