Migrating to the Java Date Time API version 8
- 2. Chi sono Federico Parezzan ØJava backend developer Homo sum, humani nihil a me alienum puto ~ Terenzio federico-parezzan parez93
- 3. 1. A lookto the past 2. Java 8+ API 3. Demo 4. Database hints 5. Parsing and formatting hints 6. A little bit of infor-magic... 🤓 Agenda Agenda
- 4. 1. Poor APIdesign 2. Date as time interval 3. No Immutability 4. No Thread-Safe 5. Formatting classes work only with Date Date & Calendar A look to the past
- 5. 1. API Clarity 2.Date as value 3. Immutability 4. Thread-Safe Java 8+ A look to the past
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- 7. API Java 8+ API java.timeMeaning Time zoned Example LocalDate Date NO Current date LocalTime Time NO Current time LocalDateTime Date and time NO Start of a conference call in Italy ZonedDateTime Date and time YES Start of a conference call in America Duration Time between two instants NO Length of a meetup Period Amount of time in years, months and days NO Length of university studies Instant Specific moment in time YES Timestamp
- 8. DEMO LocalDate, LocalTime &LocalDateTime
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- 12. Database types mapping Databasehints SQL JAVA 8+ DATE LocalDate TIME LocalTime TIMESTAMP LocalDateTime TIME WITH TIME ZONE OffsetTime TIMESTAMP WITHOUT TIME ZONE OffsetDateTime
- 13. LocalDateTime dateTime =LocalDateTime.of(2020, 9, 1, 13, 14); DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd/MM/yyyy HH:mm:ss"); String formattedDateTime = dateTime.format(formatter); System.out.println(formattedDateTime); LocalDateTime parsedDate = LocalDateTime.parse(formattedDateTime, formatter); System.out.println(parsedDate); Parsing & Formatting Parsing & Formatting
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