public static void main(String[] args) {
boolean flag=true;
while(flag){
Scanner sc=new Scanner(System.in);
System.out.println("请输入年份");
int year=sc.nextInt();
System.out.println("请输入月份");
int month=sc.nextInt();
//当前月的天数
int currentDay=0;
//闰年计数
int count=0;
if(year<1900){
System.out.println("您输入的年份不符合要求,请输入大于1900的年份");
continue;
}
for(int i=1900;i<year;i++){
if((i%4==0&&i%100!=0)||i%400==0){
count++;
}
}
int preYear=(year-1900)*365+count;
int totalMonthDay=0;
for(int i=1;i<=month;i++){
int days=0;
switch (i) {
case 2: {
if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
days = 29;
} else {
days = 28;
}
break;
}
case 4:
case 6:
case 9:
case 11: {
days = 30;
break;
}
default:
days = 31;
break;
}
if(i==month){//当前月的天数
currentDay=days;
}
totalMonthDay+=days;
}
int week=(preYear+totalMonthDay-currentDay+1)%7;
System.out.println("星期天\t星期一\t星期二\t星期三\t星期四\t星期五\t星期六");
int blank=0;
//打印日期前空格
for(int i=1;i<=week;i++){
blank++;
System.out.print("\t");
}
//打印日期
for(int i=1;i<=currentDay;i++){
if(blank%7==0){
System.out.println();
}
blank++;
System.out.print(i+"\t");
}
String l=sc.next();
System.out.println("继续按Y");
if(l.equalsIgnoreCase("l")){
continue;
}
else{
System.out.println("退出系统");
break;
}
}
}
空空空空空空啊
流年4水0
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