Java DateTimeFormatter (with Examples)
Java examples to use DateTimeFormatter for formatting ZonedDateTime, LocalDateTime, LocalDate and LocalTime with inbuilt and custom patterns.
Convert between LocalDate to java.sql.Date
Java 8 examples to convert from LocalDate to java.sql.Date and vice versa.
Convert between LocalTime to java.sql.Time
Java examples to convert from LocalTime to java.sql.Time and vice versa.
Converting between Date to LocalDate
Learn to convert from java.time.LocalDate to java.util.Date and vice-versa using the easy-to-understand Java examples. 1. Convert Date to LocalDate The Date.getTime() method returns the epoch milliseconds i.e. the number of milliseconds since January 1, 1970, 00:00:00 GMT. To get the LocalDate, we need to first set the zone offset information …
Convert between Date to LocalDateTime
Java 8 example to convert Date to LocalDateTime. Also, learn to convert LocalDateTime to Date instance to use in legacy code.
Convert between LocalDateTime and ZonedDateTime
Java 8 example to convert LocalDateTime to ZonedDateTime. Also, learn to convert ZonedDateTime to LocalDateTime instance with example.
Converting Date and Time between Timezones
Java examples to convert a date from one timezone to another timezone. We will see the examples using ZonedDateTime, Date and Calendar classes.
Add or Subtract Days, Months & Years to Date in Java
Java examples to add or substract days, months or years from java.util.Date and java.time.LocalDateTime classes.
How to Format LocalDateTime in Java
Java example of formatting LocalDateTime instance to String using default formats in DateTimeFormatter class and format to custom patterns.
How To Measure Elapsed Time in Java
Learn to calculate execution time or elapsed time of program or some statements using System.nanoTime() or System.currentTimeMillis() methods.
Get Current Timestamp in Java
In Java, timestamps should be represented with java.time.Instant from Java 8, and java.sql.Timestamp till Java 7. Learn to get current timestamp in java.
Compare Two Dates in Java
Learn to compare two given dates in Java to find out which date is earlier and which is later in the universal timeline. We will see date comparison examples using the following classes: 1. Date Comparison since Java 8 1.1. Core Classes The most used date classes in Java 8 …
Converting Date to EST/EDT Timezone
Java supports three timezone constants for Eastern Standard Time i.e. “EST”, “America/New_York” and “EST5EDT”. Learn to convert date to EST in Java.
Get all Dates between Two Dates as Stream
Date and time handling has always been a pain area for Java developers. The new Date-Time API added in Java 8 changed the way, we interact with date and time in Java. New Date API is a very powerful and much-needed improvement. The only thing missing was, getting a stream …
Java XMLGregorianCalendar
Learn to convert XMLGregorianCalendar to Date class or string value. Also learn to apply timezone changes and daylight saving effects as well.
Format XMLGregorianCalendar to String
Learn to format XMLGregorianCalendar instance to string in multiple patterns e.g. ‘MM/dd/yyyy hh:mm a z’ using DateTimeFormatter and SimpleDateFormat classes in Java.
Java Locale: A Comprehensive Guide
Learn about Localization and Internationalization with Locale. Learn to create Locale objects and use them for formatting dates and messages.
Parse a String to Date in Java 8
Learn to convert a string to date in Java 8 using the new date time API classes such as LocalDate, LocalDateTime, ZonedDateTime and DateTimeFormatter. 1. Convert string to date in ISO8601 format By default, java dates are in ISO8601 format, so if you have any string which represents a date …
Guide to java.util.Date Class
Learn to create new date, get current date, parse date to string or format Date object using java.util.Date class. These use-cases are frequently required, and having them in one place will help in saving time for many of us.
Get Current Date and Time in Java
Java offers many useful ways to get current date or current time using Date, Calendar and newly introduced LocalDate, LocalDateTime and ZonedDateTime classes in Java 8 Date/Time API classes.
Java – Difference Between Two Dates
Learn to find difference between two dates in days, months or any other time units – using Java 8 classes such as Duration, ChronoUnit and finally JodaTime.
Java – Calculate Age from Date of Birth
Java program to calculate age from date of birth using Java 8 localdate, period class, joda library and Java date, calendar classes.
Java 8 Date Time API
Java 8 contains the new Date and Time APIs/classes (JSR-310), called ThreeTen, which will change how you have been handling dates in Java.
Java Strict Date Validation – SimpleDateFormat.setLenient()
All of us have come across situations when we have to parse user input for validation. Other fields such as text or numeric are rather easy, but Java date validation is a little bit difficult, and a small error can leave the application in an unstable state. 1. Java Date …