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  1. import java.time.OffsetDateTime;
  2. import java.time.ZoneOffset;
  3. import java.time.format.DateTimeFormatter;
  4. import java.time.format.DateTimeFormatterBuilder;
  5. import java.util.Locale;
  6.  
  7. class Main {
  8.  
  9.     private static final DateTimeFormatter FORMATTER = 
  10.         new DateTimeFormatterBuilder()
  11.             .append(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
  12.             .appendPattern("[XXX][XX]")
  13.             .toFormatter(Locale.ENGLISH);
  14.  
  15.     public static void main(String[] args) {
  16.         String str1 = "2022-03-30T11:22:33.44+04:00";
  17.         String str2 = "2022-03-30T11:22:33.44+0400";
  18.  
  19.         // Converting to Instant
  20.         System.out.println(OffsetDateTime.parse(str1, FORMATTER).toInstant());
  21.         System.out.println(OffsetDateTime.parse(str2, FORMATTER).toInstant());
  22.  
  23.         // Converting an OffsetDateTime to another OffsetDateTime at UTC
  24.         System.out.println(OffsetDateTime.parse(str1, FORMATTER)
  25.                 .withOffsetSameInstant(ZoneOffset.UTC));
  26.         System.out.println(OffsetDateTime.parse(str2, FORMATTER)
  27.                 .withOffsetSameInstant(ZoneOffset.UTC));
  28.  
  29.     }
  30. }
Success #stdin #stdout 0.09s 54768KB
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Standard input is empty
stdout
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2022-03-30T07:22:33.440Z
2022-03-30T07:22:33.440Z
2022-03-30T07:22:33.440Z
2022-03-30T07:22:33.440Z
https://ideone.com/0JuCAH
language:
Java (HotSpot 12)
created:
359 days ago
visibility:
secret

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