//日历源代码import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;import java.util.Scanner;import java.text.DateFormat;import java.text.ParseException;import java.text.SimpleDateFormat;public class Calendar1 {        public  void show(String temp){        Date d = new Date();          SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");           String dateNowStr = sdf.format(d);           if(temp==null) temp=dateNowStr;         calen(temp);    }    public static  void calen(String temp) {         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)-1;                calendar.set(calendar.DATE, 1);                int oneday=calendar.get(calendar.DAY_OF_WEEK);                                                int maxDay=calendar.getActualMaximum(calendar.DATE);                System.out.println(temp);                                System.out.println("日\t一\t二\t三\t四\t五\t六");                                for(int j=0;j