60-APIの利用-当月の初日の日付を求める【新人エンジニアが最初に覚えたい100のJava文法】

import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class ExampleDate2 {
	public static void main(String[] args) {
		LocalDate current = LocalDate.now();
		LocalDate firstDayOfMonth = current.with(TemporalAdjusters.firstDayOfMonth());
		System.out.println(firstDayOfMonth);
	}
}