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JDK1.5ÖУ¬StringÀàÐÂÔöÁËÒ»¸öºÜÓÐÓõľ²Ì¬·½·¨String.format():
format(Locale l, String format, Object... args) ʹÓÃÖ¸¶¨µÄÓïÑÔ»·¾³¡¢¸ñʽ×Ö·û´®ºÍ²ÎÊý·µ»ØÒ»¸ö¸ñʽ»¯×Ö·û´®¡£
format(String format, Object... args) ʹÓÃÖ¸¶¨µÄ¸ñʽ×Ö·û´®ºÍ²ÎÊý·µ»ØÒ»¸ö¸ñʽ»¯×Ö·û´®¡£
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CODE:
long now = System.currentTimeMillis();
String s = String.format("%tR", now);   // "15:12"
CODE:
// Current month/day/year
Date d = new Date(now);
s = String.format("%tD", d);                // "07/13/04"
CODE:
s = String.format("%,d", Integer.MAX_VALUE); // "2,147,483,647"
CODE:
s = String.format("%05d", 123);              // "00123"
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Calendar c = ...;
String s = String.format("Duke's Birthday: %1$tm %1$te,%1$tY", c);
¸ñʽ×Ö·û´®ÊÇ format ·½·¨µÄµÚÒ»¸ö²ÎÊý¡£Ëü°üº¬Èý¸ö¸ñʽ˵Ã÷·û "%1$tm"¡¢"%1$te" ºÍ "%1$tY"£¬ËüÃÇÖ¸³öÓ¦¸ÃÈçºÎ´¦Àí²ÎÊýÒÔ¼°ÔÚÎı¾µÄʲôµØ·½²åÈëËüÃÇ¡£¸ñʽ×Ö·û´®µÄÆäÓಿ·ÖÊÇ°üÀ¨ "Dukes Birthday: " ºÍÆäËûÈκοոñ»ò±êµã·ûºÅµÄ¹Ì¶¨Îı¾¡£ ²ÎÊýÁбíÓÉ´«µÝ¸øλÓÚ¸ñʽ×Ö·û´®Ö®ºóµÄ·½·¨µÄËùÓвÎÊý×é³É¡£ÔÚÉÏÊöʾÀýÖУ¬²ÎÊýÁбíµÄ´óСΪ 1£¬ÓÉжÔÏó Calendar ×é³É¡£
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