Mar 16, 2010 · Date myDate = dateFormat.parse(dateString); // Use the Calendar class to subtract one day Calendar calendar = Calendar.getInstance(); calendar.setTime(myDate); calendar.add(Calendar.DAY_OF_YEAR, -1); // Use the date formatter to produce a formatted date string Date previousDate = calendar.getTime(); String result = dateFormat.format ...

I recommend that you use java.time, the modern Java date and time API, for your date work. It also gives you much preciser validation than the old SimpleDateFormat class used in some of the other answers.

Jul 14, 2021 · I need to validate that the birthdate is in the past. I have the following form: @Data public class PersonForm { static final SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd.M...

Nov 30, 2020 · In this tutorial, We'll learn how to get next and previous dates from the current date or for any date in old and new java 8 beyond. Sometime it is referred as tomorrows or yesterdays date is needed for a particular date. To solve this problem, we …

In Java, obtaining the previous date can be efficiently accomplished using the Java 8 Time API, particularly the LocalDate class. This API provides methods to manipulate dates without complicated code, making it a straightforward task.

May 2, 2020 · We can use this example code to calculate tomorrow’s and yesterday’s dates based on the date of today. 1. Java examples to get the next day or the previous day for any given day. The example uses legacy java.util.Date class as …

Feb 7, 2023 · Learn to validate whether a given string contains a date value in Java using various date validation techniques available in Java 8.

Feb 15, 2024 · There are mainly two ways to validate a date input to ensure it's in a specific format in Java. Using SimpleDateFormat; Using java.time.DateTimeFormatter; Below is the code implementation of these two approaches. Program to Validate a Date Input to Ensure it is in a Specific Format in Java

Use java.time, the modern Java date and time API, and in particular its LocalDate class for a date without time of day and without time of day. Look into its isBefore or isAfter method.

Feb 26, 2020 · 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. 1. Java 8 isBefore () 2. Java 8 ChronoUnit. {UNIT}.between () 3. Java 8 Period.between () 4. Legacy Calendar and Date. 5. References. 1. Java 8 isBefore ()