Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

java×Ö·û´®Ïêϸ·ÖÎö

²»¿É±äString
String¶ÔÏóÊDz»¿É±äµÄ£¬²é¿´JDKÎĵµÄã»á·¢ÏÖ£¬StringÀàÖÐÿһ¸ö¿´ÆðÀ´»áÐÞ¸ÄStringÖµµÄ·½·¨£¬Êµ¼ÊÉ϶¼ÊÇ´´½¨ÁËÒ»¸öȫеÄString¶ÔÏó£¬
ÒÔ°üº¬Ð޸ĺóµÄ×Ö·û´®ÄÚÈÝ¡£¶ø×î³õµÄString¶ÔÏóÔòË¿ºÁδ¶¯¡£
public class trys {
 public static String upcase(String s){
  return s.toUpperCase();
 }
 public static void main(String[] args) {
  String q="howdy";
  System.out.println(q);
  String qq=upcase(q);
  System.out.println(qq);
  System.out.println(q);
 }
}
µ±°Ñq´«¸øupcase()ʱ£¬Êµ¼Ê´«µÝµÄÊÇÒýÓõÄÒ»¸ö¿½±´£¬Æäʵ£¬Ã¿µ±°ÑString¶ÔÏó×÷Ϊ·½·¨µÄ²ÎÊýʱ£¬¶¼»á¸´ÖÆÒ»·ÝÒýÓ㬶ø¸ÃÒýÓÃËùÖ¸ÏòµÄ¶ÔÏóÆäʵһֱ´ýÔÚµ¥Ò»µÄÎïÀí
λÖÃÉÏ£¬´Óδ¶¯¹ý¡£
»Øµ½upcase()·½·¨Ê±£¬´«ÈëÆäÖеÄÒýÓÃÓÐÁËÃû×Ös,Ö»ÓÐupcase()ÔËÐÐʱ£¬¾Ö²¿ÒýÓÃs²Å´æÔÚ£¬Ò»µ©upcase()ÔËÐнáÊø£¬s¾ÍÏûʧÁË£¬µ±È»ÁË£¬upcase()µÄ·µ»ØÖµ£¬Æäʵֻ
ÊÇ×îÖÕ½á¹ûµÄÒýÓã¬Õâ×ãÒÔ˵Ã÷£¬upcase()·µ»ØµÄÒýÓÃÒѾ­Ö¸ÏòÁËÒ»¸öеĶÔÏ󣬶øÔ­±¾µÄq»¹ÊÇÔÚÔ­µØ¡£
StringµÄÕâÖÖÐÐΪ·½Ê½ÆäʵÕýÊÇÎÒÃÇÏëÒªµÄ¡£ÀýÈ磺
String s="asdf";
String x=Immutable.upcase(s);
ÄѵÀÄãÕæµÄÏ£Íûupdate()¸Ä±äÆä²ÎÊýÂ𣿶ÔÓÚÒ»¸ö·½·¨¶øÑÔ£¬²ÎÊýÊÇΪÁËΪ¸Ã·½·¨ÌṩÐÅÏ¢£¬¶ø²»ÊÇÏëÈø÷½·¨¸Ä±ä×Ô¼ºµÄ£¬ÔÚÔĶÁÕâ¶Î´úÂëʱ£¬¶ÁÕß×ÔÈ»¾Í»áÓÐÕâÑùµÄ¸Ð¾õ£¬
ÕâµãºÜÖØÒª£¬ÕýÊÇÓÐÁËÕâÖÖ±£ÕÏ£¬²ÅʹµÃ´úÂëÒ×ÓÚ±àдÓëÔĶÁ¡£
ÖØÔØ“+”ÓëStringBuilder
String¶ÔÏóʱ²»¿É±äµÄ£¬Äã¿ÉÒÔ¸øÒ»¸öString¶ÔÏó¼ÓÈÎÒâ¶àµÄ±ðÃû£¬ÒòΪString¶ÔÏó¾ßÓÐÖ»¶ÁÊôÐÔ£¬ËùÒÔÖ¸ÏòËûµÄÈκÎÒýÓö¼²»¿ÉÄܸıäËüµÄÖµ£¬Òò´Ë£¬Ò²¾Í²»»á¶ÔÆäËûµÄ
ÓÐʲôӰÏì¡£
²»¿É±äÐÔ»á´øÀ´Ò»¶¨µÄЧÂÊÎÊÌ⣬ΪString¶ÔÏóÖØÔØ"+"²Ù×÷·û¾ÍÊÇÒ»¸öÀý×Ó¡£ÖØÔزÙ×÷·ûµÄÒâ˼ÊÇ£¬Ò»¸ö²Ù×÷·ûÔÚÓ¦ÓÃÓÚÌØ¶¨µÄÀàʱ£¬±»¸³ÓèÌØÊâµÄÒâÒå(ÓÃÓÚ
StringµÄ"+"Óë"+="ÊÇJavaÖнöÓеÄÁ½¸öÖØÔØ¹ýµÄ²Ù×÷·û£¬¶øJava²»ÔÊÐí³ÌÐòÔ±ÖØÔØÈκβÙ×÷·û)¡£
public class Concatenation{
 public static void main(String[] args){
  String mango="mango";
  String s="abc"+mango+"def"+47;
  System.out.println(s);
 }
}
//¼Çס "abc"ÊôÓÚchar[]ÀàÐÍ  ¶ø²»ÊÇÊôÓÚStringÀàÐÍ£¬ÒòΪStringÊÇÀà¡£
¿ÉÒÔÏëÏóһϣ¬Õâ¶Î´úÂ


Ïà¹ØÎĵµ£º

̸̸Java¼Ì³ÐÖеÄÖØÔØ£¬¸²¸ÇºÍÒþ²Ø

̸̸Java¼Ì³ÐÖеÄÖØÔØ£¬¸²¸ÇºÍÒþ²Ø
ºÃ¾Ã²»Ð´²©¿ÍÁË£¬¾àÀëÉÏһƪÒѾ­¹ýÁËÁ½Äê¶àÁË¡£ÕâÁ½ÄêÔÚ¸ÉÂï,×ÜÖ®Ò»ÄêÄѾ¡£¡
ǰһ¶Îʱ¼äæÁËÁ½¸öÔ£¬Ã¦×ÅÑо¿ºÍ×öһЩSSH¼Ü¹¹µÄ¶«Î÷£¬Á½¸öÔÂÏÂÀ´£¬ÊÕ»ñÆÄ·á£¬×î½üÏÐÏÂÀ´ÁË£¬ÓÚÊǾÍÍ´¿ìµÄ¿ªÊ¼ÍæÓÎÏ·£¬µ«ÊDz»ÖªÔõôµØ£¬ÔõÃ´Íæ¶¼Ã»Òâ˼£¬ÓÚÊǾö¶¨¿ªÊ¼ÔٺúÃÑо¿Ñо¿Java°É¡£ÓÚÊÇ´ó¸Å·­ÁË·­ ......

Java´ò°üÏê½â

jarÎļþÌý˵¹ýÂð£¬Ã»ÓУ¿»òÕßİÉú£¡ºÃ£¬Ã»¹ØÏµ£¬Õâ¾ÍÊÇÎÒÃǵĵÚÒ»Õ¾£º´ò°ü·¢²¼¡£
Ϊʲô»áÓÐÕâ¸öÍæÒâÄØ£¬Ê×ÏÈ£¬ÕâÊÇjarµÄÈ«³Æ£ºJavaTM Archive (JAR) file£¬Êǵ쬾ÍÊÇjava´æµµÎļþ¡£ÕâÓеãÀàËÆzipÎļþ£¬ÏëÒ»ÏëËüÊǸÉʲôµÄÓõÄÄØ£¬Ñ¹Ëõ£¡£¿Ã»´í¾ÍÊÇҪѹËõ£¬½«ÎÒÃÇÔ­ÏÈÁãÉ¢µÄ¶«Î÷·Åµ½Ò»Ï£¬ÖØÐ ×éÖ¯£¬ËùÓÐÕâЩĿµÄÖ»ÓÐÒ»¸ ......

»º´æÏµÍ³MemCachedµÄJava¿Í»§¶ËÓÅ»¯Àú³Ì

來Ô´£ºhttp://www.infoq.com/cn/articles/memcached-java
×÷Õß




á¯Îijõ

·¢²¼ÓÚ
2008Äê9ÔÂ27ÈÕ ÉÏÎç12ʱ38·Ö

ÉçÇø
Java
Ö÷Ìâ
¼¯ÈºÓ뻺´æ
Memcached ÊÇʲô£¿
MemcachedÊÇÒ»ÖÖ¼¯ÖÐʽCache£¬Ö§³Ö·Ö²¼Ê½ºáÏòÀ©Õ¹¡£ÕâÀïÐèÒª½âÊÍ˵Ã÷һϣ¬ºÜ¶à¿ª·¢Õß¾õµÃMemcachedÊÇÒ»ÖÖ· ......

java ¶ÓÁÐʵÏÖ

¶ÓÁÐÆäʵ ËùÖ¸Éú»îÖÐÅŶӵÄÏÖÏó£¬È¥É̳¡¹ºÎ¸¶¿îʱÐèÒªÅŶӣ¬ Âò·¹Ê±ÐèÒªÅŶӣ¬ ºÃ¶àÊÂÇé¶¼ÊÇÐèÒªÅŶӣ¬ ÅÅÔÚµÚһλµÄÔòÏÈ´¦Àí£¬½áÊøºó£¬ ºóÃæµÄÈ˶¼ÏñÇ°ÒÆ¶¯Ò»Î»£¬ÔÚ¿ª·¢ÖÐÒ²ÓкöàÕâÑùµÄÊÂÇéÐèÒª´¦Àí£¬ÈçÎļþµÄÏÂÔØ£¬¶ÌÐŵķ¢Ë͹¦ÄÜ£¬ µÈÕâЩ¶¼ÊÇÐèÒª¶ÓÁз½Ê½ÊµÏÖ¡£ºÃÁË£¬ ·Ï»°²»¶à˵£¬ ÏêÇé¼ûÏÂÃæ´úÂ룡
package com. ......

̰³ÔÉßµÄËã·¨·ÖÎö(Java)


̰³ÔÉßµÄËã·¨·ÖÎö(Java)
 
̰³ÔÉßÊÇÒ»¿î·Ç³£¾­µäµÄÊÖ»úÓÎÏ·¡£ËüÓкܶàËã·¨£¬ÕâÀïÏêϸ·ÖÎöÒ»ÖֱȽÏÓÅÐãµÄËã·¨¡£
Ê×ÏȽéÉÜÏÂÖ÷ÒªÓõ½µÄÆß¸öÀࣺ
l          WormMain£º×îÖ÷ÒªµÄÀ࣬¿ØÖÆËùÓÐÆäËüÀàµÄÔËÐкÍÏú»Ù¡£
l       &nbs ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ