String text = "20010101";
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
ParsePosition pos = new ParsePosition(0);
Date value = formatter.parse(text, pos); //value.setDate(value.getDate() - 1);
java.util.Calendar c = java.util.Calendar.getInstance();
//c.setTime(value);
for (int i = 0; i < 100; i++) {
c.set(Calendar.DAY_OF_MONTH, c.get(Calendar.DAY_OF_MONTH) - 1); String datestr = String.valueOf(c.get(java.util.Calendar.DATE));
if (datestr.length() == 1)
datestr = "0" + datestr;
String monstr = String.valueOf(c.get(java.util.Calendar.MONTH) + 1);
if (monstr.length() == 1)
monstr = "0" + monstr;
String yestr = String.valueOf(c.get(java.util.Calendar.YEAR));
String str = yestr + monstr + datestr; System.out.println(str);
}
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
ParsePosition pos = new ParsePosition(0);
Date value = formatter.parse(text, pos); //value.setDate(value.getDate() - 1);
java.util.Calendar c = java.util.Calendar.getInstance();
//c.setTime(value);
for (int i = 0; i < 100; i++) {
c.set(Calendar.DAY_OF_MONTH, c.get(Calendar.DAY_OF_MONTH) - 1); String datestr = String.valueOf(c.get(java.util.Calendar.DATE));
if (datestr.length() == 1)
datestr = "0" + datestr;
String monstr = String.valueOf(c.get(java.util.Calendar.MONTH) + 1);
if (monstr.length() == 1)
monstr = "0" + monstr;
String yestr = String.valueOf(c.get(java.util.Calendar.YEAR));
String str = yestr + monstr + datestr; System.out.println(str);
}
SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
Calendar MyDate = Calendar.getInstance();
MyDate.setTime(new java.util.Date());
String adddate=df.format(MyDate.getTime()).substring(0,8);
return adddate;
}
System.out.println(c.get(Calendar.MONTH));
System.out.println(c.get(Calendar.DATE));
2002
9
25 怎么做呢??
//file:CalendarTest.java
import java.util.*;public class CalendarTest
{
public static void main(String[] args)
{
GregorianCalendar d = new GregorianCalendar();
int today = d.get(Calendar.DAY_OF_MONTH);
int month = d.get(Calendar.MONTH) + 1;
int year = d.get(Calendar.YEAR);
System.out.println("today=" + today);
System.out.println("month=" + month);
System.out.println("year=" + year);
}
}
System.out.println(c.YEAR);
System.out.println(c.MONDAY);
System.out.println(c.DATE);
Calendar中的变量YEAR,MONTH,DATE是静态的,不能由Calendar对象访问,只能由Calendar类本身访问,因此应该是
System.out.println(c.get(Calendar.YEAR));
System.out.println(c.get(Calendar.MONDAY));
System.out.println(c.get(Calendar.DATE));