Javaʱ¼äº¯Êý
String posttime=new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:sss").format( java.util.Calendar.getInstance().getTime() );
1. Java¼ÆËãʱ¼äÒÀ¿¿1970Äê1ÔÂ1ÈÕ¿ªÊ¼µÄºÁÃëÊý.
2. DateÀàµÄ¹¹Ô캯ÊýDate()·µ»Ø´ú±íµ±Ç°´´½¨µÄʱ¿ÌµÄ¶ÔÏó¡£DateµÄ·½·¨getTime()·µ»ØÒ»¸ölongÖµÔÚÊýÖµÉϵÈÓÚ1970Äê1ÔÂ1ÈÕ֮ǰ»òÖ®ºóµÄʱ¿Ì¡£
3. DateFormatÀàÓÃÀ´×ª»»Dateµ½String,·´Ö®ÒàÈ»¡£¾²Ì¬·½·¨getDateInstance()·µ»ØDateFormatµÄȱʡ¸ñʽ£»getDateInstance(DateFormat.FIELD)·µ»ØÖ¸¶¨µÄDateFormat¶ÔÏó¸ñʽ¡£Format(Date d)·½·¨·µ»ØString±íʾÈÕÆÚ£¬ÀýÈ磢January 1,2002.£¢·´¹ýÀ´£¬parse(String s)·½·¨·µ»ØÒÔ²ÎÊý×Ö·û´®±íʾµÄDate¶ÔÏó¡£
4. format()·½·¨·µ»ØµÄ×Ö·û´®¸ñʽ¸ù¾Ý²»Í¬µØÇøµÄʱ¼äÉèÖöøÓÐËù²»Í¬¡£
5. GregorianCalendearÀàÓÐÁ½¸öÖØÒªµÄ¹¹Ô캯Êý£ºGregorianCalerdar(),·µ»Ø´ú±íµ±Ç°´´½¨Ê±¼äµÄ¶ÔÏó£»GregorianCalendar(int year,int month,int date)·µ»Ø´ú±íÈÎÒâÈÕÆڵĶÔÏó¡£GregorianCalendarÀàµÄgetTime()·½·¨·µ»ØÈÕÆÚ¶ÔÏó¡£Add(int field,int amount)·½·¨Í¨¹ý¼Ó»ò¼õʱ¼äµ¥Î»£¬ÏóÌìÊý£¬ÔÂÊý»òÄêÊýÀ´¼ÆËãÈÕÆÚ¡£
GregorianCalendarºÍ ʱ¼ä
Á½¸öGregorianCalendarµÄ¹¹Ô캯Êý¿ÉÒÔÓÃÀ´´
Ïà¹ØÎĵµ£º
´ÓCore Javaµ½Thinking in Java
JavaÊÇÒ»ÖÖ¿çƽ̨¡¢ÃæÏò¶ÔÏ󡢸øÓèÍøÂç¼°Ö§³Ö¶àýÌåµÄ±à³ÌÓïÑÔ£¬²¢¿É²åÈëµ½HTMLÎĵµÖС£
1.ÔÚhtmlÎĵµÖÐÌí¼ÓÁ´½Ó£¬¼´ÔÚ<body>±êÇ©¼ä²åÈëÒÔÏ´úÂ룺
<applet code=ÀàÃû.class width=¿í¶È height=¸ß¶È></applet>
2.·â×°ÊÇÒ»ÖÖ½«´úÂë¼°Æä´¦ÀíµÄÊý¾Ý°ó¶¨ÔÚÒ»Æð± ......
private String smtpHost;
private String smtpUserName;
private String smtpPassword;
public void sendEmail(String fromAddress, List<String> toAddresses, List<String> ccAddresses,
String subject, String message) {
Properties props = new Properties();
props.put("mail.smtp.host", smt ......
·â×°ÀàÒ²½Ð°ü×°À࣬ÊÇÕë¶Ô°ËÖÖ»ù±¾¶¨ÒåÏàÓ¦µÄÒýÓÃÀàÐÍ¡£
»ù±¾Êý¾ÝÀàÐÍ ·â×°Àà
boolean &nbs ......