在Java中将每年的日期转换为每月的日期
首先，使用DAY_OF_YEAR常量设置一年中的某天。
Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, 2018); cal.set(Calendar.DAY_OF_YEAR, 320);
现在，获取月中的某天-
int res = cal.get(Calendar.DAY_OF_MONTH);
以下是一个例子-
示例
import java.util.Calendar;
public class Demo {
public static void main(String[] args) {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, 2018);
cal.set(Calendar.DAY_OF_YEAR, 320);
System.out.println("Date = " + cal.getTime());
int res = cal.get(Calendar.DAY_OF_MONTH);
System.out.println("Day of month = " + res);
}
}输出结果
Date = Fri Nov 16 07:54:55 UTC 2018 Day of month = 16