根据输入年份输出当年的日历表

最新推荐文章于 2023-11-09 11:38:52 发布

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最新推荐文章于 2023-11-09 11:38:52 发布

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分类专栏： Java 文章标签：日历 Java日期

本文链接：https://blog.youkuaiyun.com/qq_34517044/article/details/102786243

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本文介绍了一个使用Java编写的程序，该程序能够接收用户输入的年份，然后打印出该年的完整日历，包括每个月的天数和每周的布局。程序利用了Java的Calendar和DateFormatSymbols类来获取日期和星期的名称。

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public class YearDateTest {
	public static void main(String[] args) {
		System.out.println("Please input year:");
		Scanner sc=new Scanner(System.in);
		int year=sc.nextInt();
		sc.close();
		String[] month= {"January","Febuary","March","April","May","June","July","August","September","October","November","December"};
		Calendar cal=Calendar.getInstance();
		//设置日期为指定年份对应日期
		cal.set(Calendar.YEAR,year);
		//获取1月1日对应的星期值
		int firstWeekday=cal.getFirstDayOfWeek();
		//获取本地化的标准星期名称
		String[] weekdaysNames=new DateFormatSymbols().getShortWeekdays();
		for(int i=0;i<12;i++) {
			//第一月到第十二月 注意月份值减1
			cal.set(Calendar.MONTH,i);
			//从第一天开始
			cal.set(Calendar.DAY_OF_MONTH,1);
			int Month=cal.get(Calendar.MONTH);
			int weekday=cal.get(Calendar.DAY_OF_WEEK);
	        System.out.println("Month's name is "+month[i]);
	        System.out.println("---------------------------");
			int count=0;
			//确定第一天在日历中的位置
			while(weekday!=firstWeekday) {
				count++;
				cal.add(Calendar.DAY_OF_MONTH,-1);
				weekday=cal.get(Calendar.DAY_OF_WEEK);
			}
			//标准化星期值
			do {
				System.out.printf("%4s",weekdaysNames[weekday]);
				cal.add(Calendar.DAY_OF_WEEK,1);
				weekday=cal.get(Calendar.DAY_OF_WEEK);
			}while(weekday!=firstWeekday);
			System.out.println();
			for(int j=1;j<=count;j++) {
				System.out.printf("     ");
			}
			//重置为当月第一天
			cal.set(Calendar.DAY_OF_MONTH,1);
			//循环输出本月中的每一天 直至跳出当月
			do {
				System.out.printf("%4d ",cal.get(Calendar.DAY_OF_MONTH));
				cal.add(Calendar.DAY_OF_MONTH,1);
				weekday=cal.get(Calendar.DAY_OF_WEEK);
				if(weekday==firstWeekday)
					System.out.println();
			}while(cal.get(Calendar.MONTH)==Month);
			if(weekday!=firstWeekday)
				System.out.println();
		}
	}
}