Favourite tutorials for developers
Spring example to show you how to inject a “Date” into bean property. In Spring, you can inject a Date via two methods. Factory bean: Declare a dateFormat bean, in “customer” bean, reference “dateFormat” bean as a factory bean. CustomDateEditor: The factory method will call SimpleDateFormat.parse() to convert String into Date object automatically.
In Java, you can use the following ways to measure elapsed time in Java: System.nanoTime() – This is the recommended solution to measure elapsed time in Java. We also can use System.currentTimeMillis() or Instant.now().toEpochMilli() or Date().getTime() to calculate the execution time.
If Java 8, DateTimeFormatter, else SimpleDateFormat to change the date format in a String. Convert the String to LocalDateTime and change the date format with DateTimeFormatter. Convert the String to Date and change the date format with SimpleDateFormat
This Java example shows you how to display a list of TimeZone with GMT in front.
In Java 8, you can use the predefined java.time.temporal.TemporalAdjusters to adjust a date or Temporal. Example to move a date to firstDayOfMonth, firstDayOfNextMonth, next Monday and etc. Example to implement TemporalAdjuster to move a date to next Christmas.
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.
This tutorial shows you how to work with java.util.Date and java.util.Calendar. Java Date Examples: Convert Date to String, Convert String to Date, Get current date time, Convert Calendar to Date. Java Calendar Examples: Get current date time, Simple Calendar example, Set a date manually, Add or subtract from a date, Convert Date to Calendar
This article shows Java 8 and legacy date-time APIs example to check if a date is 30 days or 6 months older than the current date. We can use few ways: 1 – Java 8 isBefore(). 2 – Java 8 ChronoUnit.{UNIT}.between(), 3 – Java 8 Period.between(), 4 – Legacy Calendar and Date
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.
In this tutorial, we will show you few examples (ZonedDateTime (Java 8), Date, Calendar and Joda Time) to convert a date and time between different time zones. For time zone, avoid both Date and Calendar: If you are using JDK >= 8, use the new java.time.* framework; If you are using JDK < 8, use Joda Time. (The new Java 8 java.time.* framework is inspired by this library)
by 
