求高手解答题目:输入某年某月某日,判断这一天是这一年的第几天?代码该怎样写啊?求教!
------解决方案--------------------
public static void main(String[] args) {
int i,j,k,year,month,day;
int[] MONTH={0,31,28,31,30,31,30,31,31,30,31,30,31},D;
if((year%4==0&&year%100!=0)||year%400==0)
{
MONTH[2]=29;
}
D=0;
for(i=1;i<month;i++)
{
D+=MONTH[i];
}
D=D+day;
System.out.println("这一天是以年中的第:" + D + "天!");
}
------解决方案--------------------
用java的 Calendar类。
- Java code
Calendar calendar = Calendar.getInstance();calendar.set(year,month,date);int dayOfYear = calendar.get(Calendar.DAY_OF_YEAR);
------解决方案--------------------
- Java code
public static void main(String[] args) { Scanner input = new Scanner(System.in); //获取键盘输入的年月日 int year = input.nextInt(); int month = input.nextInt(); int date = input.nextInt(); Calendar calendar = Calendar.getInstance(); //设置calendar表示的日期,这里注意在Calendar中月是从0开始,也就是1月的时候month应设为0; calendar.set(year, month-1, date); int dayOfYear = calendar.get(Calendar.DAY_OF_YEAR); System.out.println(dayOfYear);}