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1£©JAVAÌṩÁË3¸öÈÕÆÚÀࣺDate¡¢CalendarºÍDateFormat¡£
Date()·½·¨Ö÷ÒªÓÃÓÚ´´½¨ÈÕÆÚ¶ÔÏó²¢»ñÈ¡ÈÕÆÚ£»
Calendar()·½·¨Ö÷ÒªÓÃÓÚ»ñÈ¡ºÍÉèÖÃÈÕÆÚ£»
DateFormat()·½·¨Ö÷ÒªÓÃÓÚ´´½¨ÈÕÆÚ¸ñʽ»¯Æ÷£¬È»ºóÔÙÓɸñʽ»¯Æ÷½«ÈÕÆÚת»»Îª¸÷ÖÖÈÕÆÚ¸ñʽ´®Êä³ö¡£
2£©JAVAÓïÑԹ涨µÄ»ù×¼ÈÕÆÚΪ¸ñÁÖÄáÖαê׼ʱ¼ä1970.1.1.00:00:00£¬µ±Ç°ÈÕÆÚÊÇÓÉ»ù×¼ÈÕÆÚ¿ªÊ¼Ëù¾­ÀúµÄºÁÃëÊýת»»³öÀ´µÄ¡£
3£©DateFomatÀàÔÚjava.text°üÖУ¬DateºÍCalendarÀàÔÚjava.util°üÖС£
4£©ÊµÀýÈçÏ£º
import java.util.*;
import java.text.*;

public class DisplayDate {
public static void main(String[] args){
Date today;
Calendar now;
DateFormat f1,f2;
String s1,s2;

System.out.println("\nÏÔʾDateÀàµÄÏà¹ØÓ÷¨");

today = new Date();
System.out.println("new Date()= \t" today);

System.out.println("\nÓÃDateFormatÀàÏÔʾ¸÷ÖÖÈÕÆÚ¸ñʽ");

//ÏÔʾ¸÷ÖÖÈÕÆÚ¸ñʽ
f1 = DateFormat.getDateInstance();
s1 = f1.format(today);
System.out.println("DateFormat.getDateInstance()= \t" s1);

f1 = DateFormat.getDateInstance(DateFormat.LONG,Locale.CHINA);
s1 = f1.format(today);
System.out.println("DateFormat.getDateInstance(DateFormat.LONG,Locale.CHINA)= \t" s1);

f1 = DateFormat.getDateInstance(DateFormat.MEDIUM,Locale.CHINA);
s1 = f1.format(today);
System.out.println("DateFormat.getDateInstance(DateFormat.MEDIUM,Locale.CHINA)= \t" s1);

f1 = DateFormat.getDateInstance(DateFormat.SHORT,Locale.CHINA);
s1 = f1.format(today);
System.out.println("DateFormat.getDateInstance(DateFormat.SHORT,Locale.CHINA)= \t" s1);

System.out.println("\nÓÃDateFormatÀàÏÔʾ¸÷ÖÖʱ¼ä¸ñʽ");

//ÏÔʾ¸÷ÖÖʱ¼ä¸ñʽ
f1 = DateFormat.getTimeInstance();
s1 = f1.format(today);
System.out.println("DateFormat.getTimeInstance()= \t" s1);

f1 = DateFormat.getTimeInstance(DateFormat.LONG,Locale.CHINA);
s1 = f1.format(today);
System.out.println("DateFormat.getTimeInstance(DateFormat.LONG,Locale.CHINA)= \t" s1);

f1 = DateFormat.getTimeInstance(DateFormat.MEDIUM,Locale.CHINA);
s1 = f1.format(today);
System.out.println("DateFormat.getTimeInstance(DateFormat.MEDIUM,Locale.CHINA)= \t" s1);

f1 = DateFormat.getTimeInstance(DateFormat.SHORT,Locale.CHINA);
s1 = f1.format(today);
System.out.println("DateFormat.getTimeInstance(DateFormat.SHORT,Locale.CHINA)= \t" s1);

System.out.println("\nÏÔʾCalendarµÄÏà¹ØÊ±¼äÓ÷¨");

now = Calendar.getInstance();
today = now.getTime();
System.out.println("Calendar.getInstance().getTime()= \t" today.toString());

}
}

³ÌÐòÔËÐнá¹ûÏÔʾÈçÏ£º

ÏÔʾDateÀàµÄÏà¹ØÓ÷¨
new Date()= Fri May 02 13:29:32 CST 2003

ÓÃDateFormatÀàÏÔʾ¸÷ÖÖÈÕÆÚ¸ñʽ
DateFormat.getDateInstance()= 2003-5-2
DateFormat.getDateInstance(DateFormat.LONG,Locale.CHINA)= 2003Äê5ÔÂ2ÈÕ
DateFormat.getDateInstance(DateFormat.MEDIUM,Locale.CHINA)= 2003-5-2
DateFormat.getDateInstance(DateFormat.SHORT,Locale.CHINA)= 03-5-2

ÓÃDateFormatÀàÏÔʾ¸÷ÖÖʱ¼ä¸ñʽ
DateFormat.getTimeInstance()= 13:29:32
DateFormat.getTimeInstance(DateFormat.LONG,Locale.CHINA)= ÏÂÎç01ʱ29·Ö32Ãë
DateFormat.getTimeInstance(DateFormat.MEDIUM,Locale.CHINA)= 13:29:32
DateFormat.getTimeInstance(DateFormat.SHORT,Locale.CHINA)= ÏÂÎç1:29

ÏÔʾCalendarµÄÏà¹ØÊ±¼äÓ÷¨
Calendar.getInstance().getTime()= Fri May 02 13:29:33 CST 2003

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