JavaÕýÔò±í´ïʽÈëÃÅ
ÖÚËùÖÜÖª£¬ÔÚ³ÌÐò¿ª·¢ÖУ¬ÄÑÃâ»áÓöµ½ÐèҪƥÅä¡¢²éÕÒ¡¢Ìæ»»¡¢ÅжÏ×Ö·û´®µÄÇé¿ö·¢Éú£¬¶øÕâЩÇé¿öÓÐʱÓֱȽϸ´ÔÓ£¬Èç¹ûÓô¿±àÂ뷽ʽ½â¾ö£¬ÍùÍù»áÀ˷ѳÌÐòÔ±µÄʱ¼ä¼°¾«Á¦¡£Òò´Ë£¬Ñ§Ï°¼°Ê¹ÓÃÕýÔò±í´ïʽ£¬±ã³ÉÁ˽â¾öÕâһì¶ÜµÄÖ÷ÒªÊֶΡ£
´ó ¼Ò¶¼ÖªµÀ£¬ÕýÔò±í´ïʽÊÇÒ»ÖÖ¿ÉÒÔÓÃÓÚģʽƥÅäºÍÌæ»»µÄ¹æ·¶£¬Ò»¸öÕýÔò±í´ïʽ¾ÍÊÇÓÉÆÕͨµÄ×Ö·û£¨ÀýÈç×Ö·ûaµ½z£©ÒÔ¼°ÌØÊâ×Ö·û£¨Ôª×Ö·û£©×é³ÉµÄÎÄ×Öģʽ£¬Ëü ÓÃÒÔÃèÊöÔÚ²éÕÒÎÄ×ÖÖ÷Ìåʱ´ýÆ¥ÅäµÄÒ»¸ö»ò¶à¸ö×Ö·û´®¡£ÕýÔò±í´ïʽ×÷Ϊһ¸öÄ£°å£¬½«Ä³¸ö×Ö·ûģʽÓëËùËÑË÷µÄ×Ö·û´®½øÐÐÆ¥Åä¡£
×Ô´Ójdk1.4ÍÆ³öjava.util.regex°ü£¬¾ÍΪÎÒÃÇÌṩÁ˺ܺõÄJAVAÕýÔò±í´ïʽӦÓÃÆ½Ì¨¡£
ÒòΪÕýÔò±í´ïʽÊÇÒ»¸öºÜÅÓÔÓµÄÌåϵ£¬ËùÒÔÎÒ½öÀý¾ÙЩÈëÃŵĸÅÄ¸ü¶àµÄÇë²ÎÔÄÏà¹ØÊé¼®¼°×ÔÐÐÃþË÷¡£
\\ ·´Ð±¸Ü
\t ¼ä¸ô ('\u0009')
\n »»ÐÐ ('\u000A')
\r »Ø³µ ('\u000D')
\d Êý×Ö µÈ¼ÛÓÚ[0-9]
\D ·ÇÊý×Ö µÈ¼ÛÓÚ[^0-9]
\s ¿Õ°×·ûºÅ [\t\n\x0B\f\r]
\S ·Ç¿Õ°×·ûºÅ [^\t\n\x0B\f\r]
\w µ¥¶À×Ö·û [a-zA-Z_0-9]
\W ·Çµ¥¶À×Ö·û [^a-zA-Z_0-9]
\f »»Ò³·û
\e Escape
\b Ò»¸öµ¥´ÊµÄ±ß½ç
\B Ò»¸ö·Çµ¥´ÊµÄ±ß½ç
\G ǰһ¸öÆ¥ÅäµÄ½áÊø
^ΪÏÞÖÆ¿ªÍ·
^java Ìõ¼þÏÞÖÆÎªÒÔJavaΪ¿ªÍ·×Ö·û
$ΪÏÞÖÆ½áβ
java$ Ìõ¼þÏÞÖÆÎªÒÔjavaΪ½áβ×Ö·û
. Ìõ¼þÏÞÖÆ³ý\nÒÔÍâÈÎÒâÒ»¸öµ¥¶À×Ö·û
java.. Ìõ¼þÏÞÖÆÎªjavaºó³ý»»ÐÐÍâÈÎÒâÁ½¸ö×Ö·û
¼ÓÈëÌØ¶¨ÏÞÖÆÌõ¼þ¡¸[]¡¹
[a-z] Ìõ¼þÏÞÖÆÔÚСдa to z·¶Î§ÖÐÒ»¸ö×Ö·û
[A-Z] Ìõ¼þÏÞÖÆÔÚ´óдA to Z·¶Î§ÖÐÒ»¸ö×Ö·û
[a-zA-Z] Ìõ¼þÏÞÖÆÔÚСдa to z»ò´óдA to Z·¶Î§ÖÐÒ»¸ö×Ö·û
[0-9] Ìõ¼þÏÞÖÆÔÚСд0 to 9·¶Î§ÖÐÒ»¸ö×Ö·û
[0-9a-z] Ìõ¼þÏÞÖÆÔÚСд0 to 9»òa to z·¶Î§ÖÐÒ»¸ö×Ö·û
[0-9[a-z]] Ìõ¼þÏÞÖÆÔÚСд0 to 9»òa to z·¶Î§ÖÐÒ»¸ö×Ö·û(½»¼¯)
[]ÖмÓÈë^ºó¼ÓÔÙ´ÎÏÞÖÆÌõ¼þ¡¸[^]¡¹
[^a-z] Ìõ¼þÏÞÖÆÔÚ·ÇСдa to z·¶Î§ÖÐÒ»¸ö×Ö·û
[^A-Z] Ìõ¼þÏÞÖÆÔÚ·Ç´óдA to Z·¶Î§ÖÐÒ»¸ö×Ö·û
[^a-zA-Z] Ìõ¼þÏÞÖÆÔÚ·ÇСдa to z»ò´óдA to Z·¶Î§ÖÐÒ»¸ö×Ö·û
[^0-9] Ìõ¼þÏÞÖÆÔÚ·ÇСд0 to 9·¶Î§ÖÐÒ»¸ö×Ö·û
[^0-9a-z] Ìõ¼þÏÞÖÆÔÚ·ÇСд0 to 9»òa to z·¶Î§ÖÐÒ»¸ö×Ö·û
[^0-9[a-z]] Ìõ¼þÏÞÖÆÔÚ·ÇСд0 to 9»òa to z·¶Î
Ïà¹ØÎĵµ£º
ÒÔǰÔÚ¼ÒÌýÕÅТÏéÀÏʦµÄÊÓÆµÊ±,ÂÅ´ÎÌýµ½ÕÅÀÏʦ½²µ½ÕÆÎÕJAVA»ù´¡¶ÔÓÚÎÒÃÇÒªÀ´´«ÖDzμӾÍÒµÅàѵҪѧϰµÄпγ̵ÄÖØÒª.ÏÖÔÚ¿´À´,ÕâЩ»°ÕæµÄÒ»µã¶¼²»Îª¹ý!ÓÐЩͬѧ»òÐíûÓÐÉî¿ÌÈÏʶÕÅÀÏʦ˵µÄÕâ·¬»°,×Ô¼ºÆ½Ê±¶¯ÊÖÓÖÌ«ÉÙ.¾ÍÄÃÏÖÔÚѧµÄ¾ÍÒµÅàѵ°àµÄ¿Î³ÌÀ´Ëµ,JAVA¿ª·¢ÓõŤ¾ßÏñMYECLIPSEµÈ,ÆäʹÓÃÕæµÄÊÇÈÃÈ˸е½¾ªÏ²,ÒÔǰÕÅÀÏʦÔÚ ......
*******************************************************************************************************
Filename: ftp.java
Author: leetsing(elove)
Create date: 2004-08-30
Use: connect to FTP server,then upload and download file
Modify date: 2004-09-05 add to upload file
2004-09-13 add to downl ......
1 ÒýÑÔ
JavaµÄÒ»¸öÖØÒªÓŵã¾ÍÊÇͨ¹ýÀ¬»øÊÕ¼¯Æ÷GC £¨Garbage Collection£©×Ô¶¯¹ÜÀíÄÚ´æµÄ»ØÊÕ£¬³ÌÐòÔ±²»ÐèҪͨ¹ýµ÷Óú¯ÊýÀ´ÊÍ·ÅÄÚ´æ¡£Òò´Ë£¬ºÜ¶à³ÌÐòÔ±ÈÏΪJava ²»´æÔÚÄÚ´æÐ¹Â©ÎÊÌ⣬»òÕßÈÏΪ¼´Ê¹ÓÐÄÚ´æÐ¹Â©Ò²²»ÊdzÌÐòµÄÔðÈΣ¬¶øÊÇGC »òJVMµÄÎÊÌâ¡£Æäʵ£¬ÕâÖÖÏë·¨ÊDz»ÕýÈ·µÄ£¬ÒòΪJava Ò²´æÔÚÄÚ´æ ......
¹Ø¼ü×Ö: java³éÏóÀàºÍ½Ó¿ÚµÄÇø±ð---Ïêϸ½â˵
abstract classºÍinterfaceÊÇJavaÓïÑÔÖжÔÓÚ³éÏóÀඨÒå½øÐÐÖ§³ÖµÄÁ½ÖÖ»úÖÆ£¬ÕýÊÇÓÉÓÚÕâÁ½ÖÖ»úÖÆµÄ´æÔÚ£¬²Å¸³ÓèÁËJavaÇ¿´óµÄÃæÏò¶ÔÏóÄÜÁ¦¡£abstract classºÍinterfaceÖ®¼äÔÚ¶ÔÓÚ³éÏóÀඨÒåµÄÖ§³Ö·½Ãæ¾ßÓкܴóµÄÏàËÆÐÔ£¬ÉõÖÁ¿ÉÒÔÏà»¥Ìæ»»£¬Òò´ËºÜ¶à¿ª·¢ÕßÔÚ½øÐгéÏóÀඨÒåʱ¶ÔÓÚ ......
javaÖÐsynchronizedÓ÷¨(zz)
´ò¸ö±È·½£ºÒ»¸öobject¾ÍÏñÒ»¸ö´ó·¿×Ó£¬´óÃÅÓÀÔ¶´ò¿ª¡£·¿×ÓÀïÓÐ ºÜ¶à·¿¼ä£¨Ò²¾ÍÊÇ·½·¨£©¡£ÕâЩ·¿¼äÓÐÉÏËøµÄ£¨synchronized·½·¨£©£¬ ºÍ²»ÉÏËøÖ®·Ö£¨ÆÕͨ·½·¨£©¡£·¿ÃſڷÅ×ÅÒ»°ÑÔ¿³×£¨key£©£¬Õâ°ÑÔ¿³×¿ÉÒÔ´ò¿ªËùÓÐÉÏËøµÄ·¿¼ä¡£ÁíÍâÎÒ°ÑËùÓÐÏëµ÷ÓøöÔÏó·½·¨µÄÏ̱߳ÈÓ÷³ÉÏë½øÈëÕâ·¿×Óij¸ö ......