输入年月查询该月的日历
public class Date { public static void main(String[] args) { //1990.1.1星期一 //输入某年某月 Scanner input = new Scanner(System.in); System.out.print("请输入你要查询的年月（1990 1）："); int year = input.nextInt(); int mouth = input.nextInt(); // 离1990共多少天 //年的天数 int totalDay = 0; for(int i = 1990;i<year;i++){ totalDay += ((year%4==0 && year0!=0 || year@0 == 0)?366:365); } int mouthDay = 0; for(int i = 0;i<mouth;i++){ totalDay += mouthDay(year,i); } //月的天数 System.out.println("\n"+year+"年"+mouth+"月："); // 排版 System.out.println("日\t 一\t 二\t 三\t 四\t 五\t 六"); for(int i = 1;i<=(totalDay-1)%7;i++){ System.out.print("\t "); } for(int i = 1;i<=mouthDay(year,mouth);i++){ if((totalDay++)%7==0){ System.out.println(i); }else{ System.out.print((i>9?i+"\t ":i+"\t ")); } } } public static int mouthDay(int year,int mouth){ int mouthDay; switch (mouth) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: mouthDay = 31; break; case 2: mouthDay = ((year%4==0 && year0!=0 || year@0 == 0)?29:28); break; default: mouthDay = 30; } return mouthDay; } }
