Java 8 – How to parse date with LocalDateTime
by Here are a few Java 8 examples to parse date with LocalDateTime. First, find the DateTimeFormatter pattern that matches the date format, second, parse it with LocalDateTime.parse
Tag: LocalDateTime
Java 8 – Unable to obtain LocalDateTime from TemporalAccessor
An example of converting a String to LocalDateTime, but it prompts the following errors: Unable to obtain LocalDateTime from TemporalAccessor: {},ISO resolved to 2020-08-31 of type java.time.format.Parsed . The date 31-Aug-2020 contains no time, to fix it, uses LocalDate.parse(str, dtf).atStartOfDay()
Java 8 – How to calculate days between two dates?
In Java 8, we can use ChronoUnit.DAYS.between(from, to) to calculate days between two dates, for both LocalDate and LocalDateTime.
Java 8 – Convert Epoch time milliseconds to LocalDate or LocalDateTime
In Java 8, we can use Instant.ofEpochMilli().atZone() to convert the epoch time in milliseconds back to LocalDate or LocalDateTime
Java – How to add days to current date
This article shows you how to add days to the current date, using the classic java.util.Calendar and the new Java 8 date and time APIs.
Java 8 – Difference between two LocalDate or LocalDateTime
In Java 8, we can use Period, Duration or ChronoUnit to calculate the difference between two LocalDate or LocaldateTime: 1 – Period to calculate the difference between two LocalDate, 2 – Duration to calculate the difference between two LocalDateTime, 3 – ChronoUnit for everything.
How to compare dates in Java
This article shows few examples to compare two dates in Java. Updated with Java 8 examples. For the legacy java.util.Date, we can use compareTo, before(), after() and equals() to compare two dates. For the legacy java.util.Calendar, the Calendar works the same way as java.util.Date. And The Calendar contains the similar compareTo, before(), after() and equals() to compare two calender. For the new Java 8 java.time.* classes, all contains similar compareTo, isBefore(), isAfter() and isEqual() to compare two dates, and it works the same way.
Java 8 – Convert Date to LocalDate and LocalDateTime
Few examples to convert classic Date to Java Time dates and vice versa: Convert java.util.Date to java.time.LocalDate, Convert java.util.Date to java.time.LocalDateTime, Convert java.util.Date to java.time.ZonedDateTime. The java.util.Date has no concept of time zone, and only represents the number of seconds passed since the Unix epoch time. The new Java 8 java.time.Instant is the equivalent class to the classic java.util.Date. The idea of the date conversion is to convert to an instant with a time zone.
Java 8 – Convert Instant to LocalDateTime
Java 8 examples to show you how to convert from Instant to LocalDateTime and vice versa. The java.time.LocalDateTime has no concept of time zone, just provide a zero offset UTC+0.
Java – How to get current date time
In this tutorial, we will show you how to get the current date time from the new Java 8 java.time.* like Localdate, LocalTime, LocalDateTime, ZonedDateTime, Instant and also the legacy date time APIs like Date and Calendar. In summary, For new Java 8 java.time.* APIs , we can use .now() to get the current date-time and format it with DateTimeFormatter. For legacy date-time APIs, we can use new Date() and Calendar.getInstance() to get the current date-time and format it with SimpleDateFormat.