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Ò»¸öºÃÓõÄÈÕÆÚʱ¼äÀà(java)

import java.util.*;
import java.text.*;
/**
* a <code> DateTime </code> ¶¨ÒåÁËÈÕÆÚʱ¼äµÄһЩ±ã½ÝµÄ¸ñʽ»¯²Ù×÷
*
* @version 1.0
* @author markhuang
*/
public class DateTime {
/**
* ´æ´¢Ê±¼äºÍÈÕÆÚ£¬Ä¬Èϵ±Ç°Ê±¼äºÍÈÕÆÚ
*/
// private Calendar cale = Calendar.getInstance();
private Calendar cale = new GregorianCalendar();
/**
* ĬÈϹ¹Ô캯Êý,µÃµ½µ±Ç°Ê±¼äºÍÈÕÆÚ
*/
public DateTime() {
cale.setLenient(false);
}
/**
* ¹¹Ô캯Êý,¿ÉÉèÖúÁÃë
*
* @param millisecond
* ¹ýÈ¥µÄºÁÃëÊý
* @see #DateTime
*/
public DateTime(long millisecond) {
cale.setLenient(false);
cale.setTimeInMillis(millisecond);
}
/**
* ¹¹Ô캯Êý,¿ÉÉèÖÃÄêÔÂÈÕʱ·ÖÃë
*
* @param year
* Äê
* @param month
* ÔÂ
* @param day
* ÈÕ
* @param hour
* Сʱ
* @param minute
* ·ÖÖÓ
* @param second
* Ãë
* @see #DateTime(long)
*/
public DateTime(int year, int month, int day, int hour, int minute,
int second) {
cale.setLenient(false);
cale.set(Calendar.YEAR, year);
// ÀÏÍâµÄÔ·ÝÊÇ´Ó0µ½ 11
cale.set(Calendar.MONTH, month - 1);
cale.set(Calendar.DAY_OF_MONTH, day);
cale.set(Calendar.HOUR_OF_DAY, hour);
cale.set(Calendar.MINUTE, minute);
cale.set(Calendar.SECOND, second);
}
/**
* µÃµ½µ±Ç°Äê
*
* @return µ±Ç°Äê
*/
public int year() {
return cale.get(Calendar.YEAR);
}
/**
* µÃµ½µ±Ç°ÔÂ
*
* @return µ±Ç°ÔÂ
*/
public int month() {
// ÀÏÍâµÄÔ·ÝÊÇ´Ó0µ½ 11
return cale.get(Calendar.MONTH) + 1;
}
/**
* µÃµ½µ±Ç°ÈÕ
*
* @return µ±Ç°ÈÕ
*/
public int day() {
return cale.get(Calendar.DAY_OF_MONTH);
}
/**
* µÃµ½µ±Ç°Ð¡Ê±
*
* @return µ±Ç°Ð¡Ê±
*/
public int hour() {
return cale.get(Calendar.HOUR_OF_DAY);
}
/**
* µÃµ½µ±Ç°·ÖÖÓ
*
* @return µ±Ç°·ÖÖÓ
*/
public int minute() {
return cale.get(Calendar.MINUTE);
}
/**


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