2023年日历Java

以下是使用Java编写的打印2023年日历的示例代码：

import java.time.LocalDate;
import java.time.YearMonth;

public class CalendarPrinter {
    public static void main(String[] args) {
        int year = 2023;

        // 打印每个月的日历
        for (int month = 1; month <= 12; month++) {
            YearMonth yearMonth = YearMonth.of(year, month);
            LocalDate firstDay = yearMonth.atDay(1);
            int firstDayOfWeek = firstDay.getDayOfWeek().getValue();

            System.out.println("\n" + yearMonth.getMonth() + " " + year);
            System.out.println("Mon  Tue  Wed  Thu  Fri  Sat  Sun");

            // 打印每个月的日期
            for (int i = 1; i < firstDayOfWeek; i++) {
                System.out.print("     ");
            }

            for (int day = 1; day <= yearMonth.lengthOfMonth(); day++) {
                System.out.printf("%-5d", day);

                if ((firstDayOfWeek + day - 1) % 7 == 0) {
                    System.out.println();
                }
            }

            System.out.println();
        }
    }
}

将上述代码保存为一个名为`CalendarPrinter.java`的文件，然后编译运行即可得到2023年的日历打印结果。