Java 交换循环中数组的值
我试图建立一个初学者日历练习项目,我想要的是,如果一月的最后一天在星期天结束,然后从下个月的星期一开始。这是我的密码Java 交换循环中数组的值,java,arrays,loops,Java,Arrays,Loops,我试图建立一个初学者日历练习项目,我想要的是,如果一月的最后一天在星期天结束,然后从下个月的星期一开始。这是我的密码 public static void main(String[] args) { String[] months= {"January","Febuary","March","April","May","June" ,"July","August","september","October","November"
public static void main(String[] args)
{
String[] months= {"January","Febuary","March","April","May","June"
,"July","August","september","October","November"
,"December"
};
String[] weekdays= {"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
int x;
for(int k=0;k<12;k++)
{
if(months[k]=="April" ||months[k]=="june" ||months[k]=="September" ||months[k]=="November")
{x=30;}
else if(months[k]=="Febuary")
{x=28;}
else {x=31;}
System.out.print(months[k]+"\n");
for(int i=0;i<weekdays.length;i++)
{
System.out.print("\t"+weekdays[i]);
}System.out.println();
for(int m=1;m<=x;m++) {
if(((m-1) %7) == 0) //line break after 7 characters
{
System.out.println();
}
System.out.print("\t"+m);
}
System.out.println();
}
}
publicstaticvoidmain(字符串[]args)
{
字符串[]月={“一月”、“二月”、“三月”、“四月”、“五月”、“六月”
“七月”、“八月”、“九月”、“十月”、“十一月”
“12月”
};
String[]平日={“太阳”、“星期一”、“星期二”、“星期三”、“星期四”、“星期五”、“星期六”};
int x;
对于(int k=0;k,您的程序仍需要一些调整:
1.一年中的第一天可以是星期天或一周中的其他日子。
2.如果一个月的最后一天是星期日,您应该继续订单,而不是从开始的星期日开始
我将建议您调整当前代码,或者您可以使用现有库。我认为您使用的方法不正确。使用dated与使用区域设置相关,因为所有这些名称(如月份名称、不同格式的工作日名称)都已存在于JVM中。您应该使用它:
public static void printCalendar(LocalDate date, Locale locale) {
DateFormatSymbols symbols = new DateFormatSymbols(locale);
WeekFields weekFields = WeekFields.of(locale);
printMonthName(symbols, date);
printWeekdayNames(symbols, weekFields);
printWeekdays(weekFields, date);
}
private static void printMonthName(DateFormatSymbols symbols, LocalDate date) {
System.out.println(symbols.getMonths()[date.getMonthValue() - 1]);
}
private static void printWeekdayNames(DateFormatSymbols symbols, WeekFields weekFields) {
String[] weekdays = symbols.getShortWeekdays();
DayOfWeek firstDayOfWeek = weekFields.getFirstDayOfWeek();
int offs = firstDayOfWeek == DayOfWeek.SUNDAY ? 1 : firstDayOfWeek.ordinal() + 2;
for (int i = 0; i < 7; i++)
System.out.print('\t' + (offs + i >= weekdays.length ? weekdays[(offs + i) % 7] : weekdays[offs + i]));
System.out.println();
}
private static void printWeekdays(WeekFields weekFields, LocalDate date) {
LocalDate cur = date.withDayOfMonth(1).with(weekFields.dayOfWeek(), 1);
boolean stop = false;
do {
if (cur.getMonthValue() == date.getMonthValue())
System.out.format("\t%2d", cur.getDayOfMonth());
else
System.out.format("\t ");
cur = cur.plusDays(1);
if (cur.getDayOfWeek() == weekFields.getFirstDayOfWeek()) {
System.out.println();
stop = cur.getMonthValue() != date.getMonthValue();
}
} while (!stop);
}
Test2:
printCalendar(LocalDate.of(2018, Month.DECEMBER, 17), Locale.US);
December
Sun Mon Tue Wed Thu Fri Sat
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31
printCalendar(LocalDate.of(2018, Month.DECEMBER, 17), Locale.ITALIAN);
dicembre
lun mar mer gio ven sab dom
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
我无法理解您的输出。请阅读“如何创建”。然后使用链接改进您的问题(不要通过评论添加更多信息)。否则我们无法回答您的问题并帮助您。您好,谢谢。请再次查看我编辑的代码,并告诉我如何修复它。