java日历

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Scanner;

public class test {
    public static void main(String[] args) {
        System.out.println("请输入日期 例如2000-01-01");
        Scanner sx = new Scanner(System.in);
        String temp = sx.nextLine();

        DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        try {
            Date date = format.parse(temp);
            Calendar calendar = new GregorianCalendar();
            calendar.setTime(date);
            int day = calendar.get(Calendar.DATE);
            calendar.set(Calendar.DATE,1);
            System.out.println(calendar.get(Calendar.DAY_OF_WEEK));
            int maxDate = calendar.getActualMaximum(Calendar.DATE);
            System.out.println("日\t一\t二\t三\t四\t五\t六");

            for(int i = 1; i<calendar.get(Calendar.DAY_OF_WEEK); i++){
                System.out.print("\t");
                }

                    for(int i = 1; i <= maxDate; i++){
                        if(i==day){
                            System.out.print("*");
                        }
                        System.out.print(i+"\t");

                        int w = calendar.get(Calendar.DAY_OF_WEEK);
                        if(w == Calendar.SATURDAY){
                            System.out.print("\n");

                }
                calendar.add(Calendar.DATE,1);
            }
        } catch (ParseException e) {
            e.printStackTrace();
        }

    }
}