TemporalAdjusters is a class in Java that is oriented towards bettering the options of Calendar. You can easily compute the dates of firstDayOfNextMonth, lastDayOfMonth, next Wednesday, etc.
TemporalAdjusters have many more methods defined and it is good to explore a few of them yourself. The API is available at https://docs.oracle.com/javase/8/docs/api/java/time/temporal/TemporalAdjusters.html.
import java.time.LocalDate;import java.time.DayOfWeek;import java.time.temporal.TemporalAdjusters;public class UnderstandingTemporalAdjusters { public static void main(String args[]) { UnderstandingTemporalAdjusters understandingTemporalAdjusters = new UnderstandingTemporalAdjusters(); understandingTemporalAdjusters.proceed(); } public void proceed() { //Today LocalDate today = LocalDate.now(); System.out.println("Today's date: " + today); //Last day of current month LocalDate lastDayOfMonth = today.with(TemporalAdjusters.lastDayOfMonth()); System.out.println("lastDayOfMonth : " + lastDayOfMonth); //First day of next month LocalDate firstDayOfNextMonth = today.with(TemporalAdjusters.firstDayOfNextMonth()); System.out.println("firstDayOfNextMonth : " + firstDayOfNextMonth); //Next Wednesday LocalDate nextWednesday = today.with(TemporalAdjusters.next(DayOfWeek.WEDNESDAY)); System.out.println("Next Wednesday is on: " + nextWednesday); }}/*
Expected output:
[root@mypc]# java UnderstandingTemporalAdjustersToday's date: 2019-02-21lastDayOfMonth : 2019-02-28firstDayOfNextMonth : 2019-03-01Next Wednesday is on: 2019-02-27*/
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