"Common" Java perpetual calendar code

1 Package Com.bdqn.test1;2 3 import Java.util.Scanner;4 5  Public classWannianli {6     7Scanner input =NewScanner (System.inch);8     intyear;//year9     intMonth//MonthTen     intDays = to;//The default is 31 days, so when judging directly except 4,6,9,11,2, One      A     /* - * Show Menu -      */ the      Public voidmenu () { -System. out. println ("Please enter the year"); -Year =input.nextint (); -System. out. println ("Please enter the month"); +month =input.nextint (); -          +         Switch(month) { A              Case 4: at              Case 6: -              Case 9: -              Case  One: -Days = -; -                  Break; -              Case 2: in                 //If the year can be divisible by 4 but not divisible by 100 + years by 400 . -                 if(Year%4==0&& Year% -!=0|| Year% -==0) { toDays = in; +                      Break; -}Else { theDays = -; *                 } $                  Break;Panax Notoginseng             default: -Days = to; the         } + Show (); A     } the      +      Public voidShow () { -         //1900-1-1 Monday 1900-1-9 (stipulated) $String[] weeks = {"Day","a","two","three","Four","Five","Six" }; $          for(inti =0; i < weeks.length; i++) { -System. out. print (Weeks[i] +"\ t"); -         } theSystem. out. println ("\n=================================="); -         intChadays =0;Wuyi          for(inti =1900; i < year; i++) { the             ifI4==0&& I% -!=0|| I -==0) { -Chadays + =366;//leap year 366 days Wu                 Continue; -             } AboutChadays + =365; $         } -         //The above method calculates the year from January 1, 1900 to the input, and the following method adds the input month to the -         //last for Chadays, the following for loop continues to accumulate on chadays -         //note here that the For loop is the summation of each month A          for(inti =1; I < month; i++) { +             Switch(i) { the              Case 1: -              Case 3: $              Case 5: the              Case 7: the              Case 8: the              Case Ten: the              Case  A: -Chadays + = to; in                  Break; the              Case 4: the              Case 6: About              Case 9: the              Case  One: theChadays + = -; the                  Break; +              Case 2: -                 //If the year can be divisible by 4 but not divisible by 100 + years by 400 . the                 if(Year%4==0&& Year% -!=0|| Year% -==0) {BayiChadays + = in; the}Else { theChadays + = -; -                 } -                  Break; the             } the         } the          the          - //System.out.println ("Days of Difference:" + chadays); the          the         intWeekofday = (Chadays +1) %7;//the reason for the addition is that the first in the Sunday array the //System.out.println (weekofday);94          for(inti =0; i < Weekofday; i++) { theSystem. out. Print ("\ t");//Space-Fill the         } the          for(inti =1; I <= days; i++) {98System. out. print (i +"\ t"); About             if((i + weekofday)%7==0) {//seven on each line, just a break. -System. out. println ();101             }102         }103     104     } the      Public Static voidMain (string[] args) {106         107Wannianli wnianli=NewWannianli ();108 Wnianli.menu ();109          the         111     } the}

"Common" Java perpetual calendar code