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

¡¾·Ü¶·µÚÎåÌì¡¿²ËÄñѧJavaÖ®ÎÒÒ²ÓÃ±È½ÏÆ÷

ѧÁ˼¯ºÏÀ࣬ÏëÓÃJavaµÄ¼¯ºÏÀà±àÒ»¸öͨѶ¼£¬¿ÉÊÇ·¢ÏÖÌâĿҪ¶ÔͨѶ¼ÖеÄÐÕÃûºÍ±àºÅ½øÐÐÅÅÐò¡£
²ËÄñ¸Õ¸ÕѧJava£¬±¾À´»¹Õæ²»ÖªµÀÓÐ±È½ÏÆ÷£¬ºÙºÙ£¬ÒÔΪJavaÊÇÈç´ËÇ¿´ó£¬¿ÉÒÔÖ±½Óµ÷ÓÃSort()·½·¨¾Í¿ÉÒÔ¶Ô¼¯ºÏÀàÖеĶÔÏó½øÐÐÅÅÐò£¬ºÙºÙ£¬ÓÚÊDZãÊÔÁËһϣ¬Ì«²»ºÃʹÁËѽ£¬ºÙºÙ£¬ÓÚÊÇÎÒ¿´ÁË¿´Ê飬µ½ÍøÉϲéÁ˲飬ԭÀ´ÒªÊµÏÖ±È½ÏÆ÷µÄ½Ó¿Ú£¬¶ø»ØÍ·ÔÙ¿´¿´sort()Õâ¸ö·½·¨ÓÐÒ»¸ö±ØÑ¡²ÎÊý£¬Ò»¸ö¿ÉÑ¡²ÎÊý£¬¶øÕâ¸ö¿ÉÑ¡²ÎÊý¾ÓÈ»ÊÇcomparatorµÄ¶ÔÏó¡£ÓÚÊÇÎÒѧУÁË±È½ÏÆ÷¡£ÏÂÃæ×ܽáһϡ£
±È½ÏÆ÷µÄʵÏÖÓÐÁ½¸ö·½·¨£º
1.½«Òª½øÐбȽϵĶÔÏóʵÏÖcomparable½Ó¿Ú£¬È»ºóÖØÐ´ÀïÃæµÄcompareTo(T o)·½·¨£¬¸ù¾Ý×Ô¼ºµÄÐèÒªÖØÐ´Õâ¸ö·½·¨¡£ÕâÀïµÄ·µ»ØÖµÊÇintÀàÐ͵ģ¬±È½Ï´Ë¶ÔÏóÓëÖ¸¶¨¶ÔÏóµÄ˳Ðò¡£Èç¹û¸Ã¶ÔÏóСÓÚ¡¢µÈÓÚ»ò´óÓÚÖ¸¶¨¶ÔÏó£¬Ôò·Ö±ð·µ»Ø¸ºÕûÊý¡¢Áã»òÕýÕûÊý¡£
×¢£ºÓôËÖÖ·½·¨µÄÀàÉú³ÉµÄ¶ÔÏóÔÙÅÅÐòµÄʱºòµ÷ÓÃsort()·½·¨µÄʱºò²»ÐèÒª´«ÈëÄǸöcomparator¶ÔÏóµÄ¿ÉÑ¡²ÎÊý¡£
2.ÖØÐÂдһ¸ö±È½ÏÆ÷µÄÀ࣬´ËÀàʵÏÖÁËcomparator½Ó¿Ú£¬ÖØÐ´ÆäÖеÄcompare(T o1,T o2)£¨±È½ÏÓÃÀ´ÅÅÐòµÄÁ½¸ö²ÎÊý¡£ËæµÚÒ»¸ö²ÎÊýСÓÚ¡¢µÈÓÚ»ò´óÓÚµÚ¶þ¸ö²ÎÊý¶ø·Ö±ð·µ»Ø¸ºÕûÊý¡¢Áã»òÕýÕûÊý¡££©,È»ºóÓôËÀàÉú³ÉÒ»¸ö¶ÔÏó£¬ÔÚµ÷ÓÃsort()·½·¨µÄʱºòµÚ¶þ¸ö¿ÉÑ¡²ÎÊý´«ÈëÕâ¸ö¶ÔÏó¡£Õâ¸öʱºòÎÒÃÇÐèÒªÅÅÐòµÄ¶ÔÏó»á°´ÕÕ±È½ÏÆ÷¶ÔÏóµÄ¹æÔò½øÐÐÅÅÐò¡£
ÎҸоõµÄÓÅȱµã£º
µÚÒ»¸öµÄÓŵ㣺²»ÐèÒªÔÙдһ¸ö±È½ÏÆ÷µÄÀà¡£
            ȱµã£ºÒòΪûÓÐÒ»¸öÀ࣬ËùÒÔÖ»ÄÜÓÐÒ»¸öÅÅÐò·½Ê½¡£
µÚ¶þ¸öµÄÓе㣺ÒòΪÓÐÒ»¸öÀ࣬¿ÉÒÔͨ¹ýÀàÖеijÉÔ±±äÁ¿ÊµÏÖ¶àÖÖÅÅÐò·½Ê½¡£
            ȱµã£ºÒª¶ÔÅÅÐòдһ¸öÀ࣬Âé·³¡£
¸öÈ˸оõÕâÀïµÄÓÅȱµã×ܽáµÄ²»ÊǺܺã¬ÄÄλ´óϺָµ¼Ò»Ï£¿ºÙºÙ¡£
ÎÒÔÙÑо¿Ñо¿¡£


Ïà¹ØÎĵµ£º

JAVA ¶ÔÏóºÍÀà

String s = new Date().toString();¿ÉÒÔÖ±½Ó´´½¨ÍêжÔÏóºó¾ÍÁ¢¼´ÓÃÆäµÄ·½·¨¡£
Ò»¸ö¶ÔÏó±äÁ¿²¢Ã»ÓÐʵ¼Ê°üº¬Ò»¸ö¶ÔÏ󣬶øÊǽö½öÒýÓÃÒ»¸ö¶ÔÏó¡£
GregorianCalendarÀà
javaÉè¼ÆÕß¾ö¶¨°Ñ±£´æÊ±¼äÓë¸øÊ±¼äµãÃüÃû·Ö¿ªÀ´£¬ÕâÑù¾ÍÓÐÁ½¸öÀà,dateºÍGregorianCalendar.Ò»¸öÓÃÀ´±íʾʱ¼äµã£¬Ò»¸öÓÃÀ´±íʾ´ó¼ÒÊìϤµÄÈÕÀú±íʾ·¨¡£ÊÂ浃 ......

¡¾×ª¡¿JavaÖÐtoString()·½·¨

1£®toString£¨£©·½·¨
ObjectÀà¾ßÓÐÒ»¸ötoString()·½·¨£¬Äã´´½¨µÄÿ¸öÀà¶¼»á¼Ì³Ð¸Ã·½·¨¡£Ëü·µ»Ø¶ÔÏóµÄÒ»¸öString±íʾ£¬²¢ÇÒ¶ÔÓÚµ÷ÊԷdz£ÓаïÖú¡£È»¶ø¶ÔÓÚĬÈϵÄtoString()·½·¨ÍùÍù²»ÄÜÂú×ãÐèÇó£¬ÐèÒª¸²¸ÇÕâ¸ö·½·¨¡£
toString£¨£©·½·¨½«¶ÔÏóת»»Îª×Ö·û´®¡£¿´ÒÔÏ´úÂ룺
package sample;
class Villain {
  &nb ......

javaÖеĽӿÚ

        javaÖнӿÚÔÚ¿ª·¢ÖÐÕ¼ÖØÒªµØÎ»
   £¨1£©½Ó¿ÚÖеÄËùÓз½·¨¶¼ÊÇpublic abstract
   £¨2£©ÔÚ½Ó¿ÚÖÐÉùÃ÷·½·¨Ê±£¬²»ÄÜʹÓÃnative£¬static£¬final£¬synchronized£¬private£¬protectµÈÐÞÊηû£¬¼´Ö»ÄÜʹÓÃpublic abstract£¨Ä¬ÈÏ£©
    ......

JavaÖи÷ÀàCache»úÖÆÊµÏÖ½â¾ö·½°¸


ÔÚJavaÖУ¬²»Í¬µÄÀà¶¼ÓÐ×Ô¼ºµ¥¶ÀµÄCache»úÖÆ£¬ÊµÏֵķ½·¨Ò²¿ÉÄÜÓÐËù²»Í¬£¬ÎÄÕÂÁоÙÁËJavaÖг£¼ûµÄ¸÷ÀàCache»úÖÆµÄʵÏÖ·½·¨£¬Í¬Ê±½øÐÐÁË×ۺϵıȽϡ£
OSCache
OSCacheÊǸöÒ»¸ö¹ã·º²ÉÓõĸßÐÔÄܵÄJava EE»º´æ¿ò¼Ü£¬OSCacheÄÜÓÃÓÚÈκÎJavaÓ¦ÓóÌÐòµÄÆÕͨµÄ»º´æ½â¾ö·½°¸¡£
OSCacheÓÐÒÔÏÂÌØµã£º»º´æÈκζÔÏó£¬Äã¿ÉÒÔ²»ÊÜÏÞÖ ......

java»ù´¡ÃæÊÔÌâ

1.Çëд³öÏÂÁÐJava´úÂëµÄÊä³ö½á¹û  
  package   test;  
  public   class   FatherClass()  
      {   public   FatherClass()  
       &n ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ