🏐 Java Date Year Month Day

Use the constructor for GregorianCalendar where you pass the year, month and day. Don't forget that the months go from 0 to 11 (0 for January, 11 for December). public static int numberOfDaysInMonth(int month, int year) { Calendar monthStart = new GregorianCalendar(year, month, 1); return monthStart.getActualMaximum(Calendar.DAY_OF_MONTH); } maybe better to understand: my methode get 2 strings: Value and pattern, when the value is 00082017 //ddMMyyyy and the pattern is ddMMyyyy now in my methode i have 3 Strings: day = month = and year = now i will fill the strings day = 00 month = 08 year = 2017 how can i do this? my example from the first post works, but what is when i get value 09002017 and pattern MMddyyyy then is it not working Java compare two Dates Year, month and day. 0. How do I check date validity in MM/dd/yyyy in Java? 6. check valid date in java. 0. Validating date taken in from user Overview. In this tutorial you will learn how to refactor your code in order to leverage the new Date Time API introduced in Java 8. 2. New API at a Glance. Working with dates in Java used to be hard. The old date library provided by JDK included only three classes: java.util.Date, java.util.Calendar and java.util.Timezone. The java.time framework built into Java 8 and later supplants the troublesome old java.util.Date/.Calendar classes. Date-only. A LocalDate class is offered by java.time to represent a date-only value without any time-of-day or time zone. You do need a time zone to determine a date, as a new day dawns earlier in Paris than in Montréal for example. To display the current date and time, import the java.time.LocalDateTime class, and use its now () method: Example import java.time.LocalDateTime; // import the LocalDateTime class public class Main { public static void main(String[] args) { LocalDateTime myObj = LocalDateTime.now(); System.out.println(myObj); } } The output will be: YearMonth is an immutable date-time object that represents the combination of a year and month. Any field that can be derived from a year and month, such as quarter-of-year, can be obtained. This class does not store or represent a day, time or time-zone. For example, the value "October 2007" can be stored in a YearMonth . Returns a value that is the result of subtracting 1900 from the year that contains or begins with the instant in time represented by this Date object, as interpreted in the local time zone. getYear () has an offset of 1900, which you have to add when using LocalDate.of (year, month, day). That's why the year of your calculated Instant is 115. If you are just going to a fixed 30 days in a month 365 days in a year with no leap year then you can iterate to the number of days in a for-loop and check the modulo of each one from the the user's inputted. .

java date year month day