Java Calendar, enter the month to get the date

1 //enter the year and month to print out this month's calendar table2 /*3 1.19 Year January 1 is Monday4 2. Calculate the year of the input how many days from 1900, and how many days of the year are January 1 from this month ?5 1)6 3. The total number of days%7 from the beginning of the week7 Note: The time in the computer is as low as 1900, and the UNIX system considers January 1, 1970 0 o'clock to be the time era. 8 So, in this procedure did not test the year 1900 years ago. Interested can study under their own. 9 */Ten ImportJava.util.Scanner; One classcalender{ A  -      Public Static voidMain (string[] args) { -          the print (); -  -     } -  +     //Print Output -      Public Static voidprint () { +Scanner sc =NewScanner (system.in); ASystem.out.println ("Please enter the year:"); at         intYear =sc.nextint (); -System.out.println ("Please enter month (1~12):"); -         intmonth =sc.nextint (); -  -         intDays = GetDays (year, month);//GetDays Method Details please look down -         //Days+1:day is the total number of days, the total number of days to enter the month is just the number of days before this month in         //plus 1 became the first day of the month. -         intWeek = days%7==0?1:days%7+1;//the first day of the start is the days of the week toSystem.out.println ("t \ t two \ t three \ Four \ five \ t six"); +          -         //Output first line (first week) empty out part the          for(intI=1; i<=week; i++){ *System.out.print ("\ t"); $         }Panax Notoginseng  -         //outputs the first line (first week) of each day the          for(intI=1; i<=7-week; i++){ +System.out.print (i+ "\ T"); A         } the  + System.out.println (); -  $         //1-12 Month number of months $         intMonthDay = 0; -         Switch(month) { -                  Case2: the                     if(Year%4==0&&year%100!=0 | | year%400==0 ){ -monthday=29;Wuyi}Else{ theMonthday=28; -                     } Wu                      Break; -  About                  Case4: $                  Case6: -                  Case9: -                  Case11: -Monthday=30; A                      Break; +  the                 default : -Monthday=31; $                      Break; the             } the  the         //output The remaining date, starting from the second week, so it's 8-week. the          for(intI=8-week; i<=monthday; i++){ -      inSystem.out.print (i+ "\ T"); the              the             //A line is changed every seven days, and the date can be divisible by 7. About             if((I+week)%7==0){ the System.out.println (); the             } the         } +  -  the     }Bayi  the     /* the calculates the total number of days from 1900 to 1.1 for the current month -     */ -      Public Static intGetDays (intYearintmonth) { the         //judge this year is a leap year or common year, get the total number of years the         intDay1=0, day2=0; the  the          for(inti=1900; i<year; i++){ -             if(I%4==0&&i%100!=0 | | i%400==0){ theday1+=366; the}Else{ theday1+=365;94             } the         } the      the         //get the total number of months98          for(intI=1; i<month; i++){ About             Switch(i) { -                  Case2:101                     if(Year%4==0&&year%100!=0 | | year%400==0 ){102day2+=29;103}Else{104Day2+=28; the                     }106                      Break;107 108                  Case4:109                  Case6: the                  Case9:111                  Case11: theDay2+=30;113                      Break; the  the                 default : theDay2+=31;117                      Break;118             }119         } -     121         returnday1+Day2;122 123     }124      the}

Java Calendar, enter the month to get the date