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

JavaÁ¬½Ó¸÷ÖÖÊý¾Ý¿âµÄÅäÖ÷½·¨

JavaÁ¬½Ó¸÷ÖÖÊý¾Ý¿âµÄÅäÖ÷½·¨MySQL
£ºString Driver="com.mysql.jdbc.Driver"
;  //Çý¶¯³ÌÐòString URL="jdbc:mysql://localhost:3306/db_name"
;  //Á¬½ÓµÄURL,db_nameΪÊý¾Ý¿âString Username="username"
;  //Óû§ÃûString Password="password"
;  //ÃÜÂëClass.forName(Driver);Connection con=DriverManager.getConnection(URL,Username,Password);Microsoft SQL Server 2.0
Çý¶¯(3¸öjar)£ºString Driver="com.microsoft.jdbc


Ïà¹ØÎĵµ£º

javaʹÓÃrocksawºÍvserv tcpipʵÏÖ»ùÓÚICMPµÄPing¹¦ÄÜ

Ò»£º×¼±¸ www.savarese.org download
 1.  rocksaw-1.0.0-src.tar.gz
 2.  vserv-tcpip-0.9.2-src.tar.gz
¶þ£º±àÒëÔ´ÎļþµÃµ½jar°ü ʹÓÃAnt
 1.  build vserv-tcpip-0.9.2-src
      ÔÚvserv-tcpip-0.9.2Ŀ¼ÏÂÃæ½¨Ò»¸ötestsĿ¼£¬È»ºóÔÚcmd´°¿ÚϽøÈë ......

JavaÀ¬»ø»ØÊÕµ÷ÓÅ

JavaÀ¬»ø»ØÊÕµ÷ÓÅ
ÔÚJavaÖУ¬Í¨³£Í¨Ñ¶ÀàÐ͵ķþÎñÆ÷¶ÔGC(Garbage Collection)±È½ÏÃô¸Ð¡£Í¨³£Í¨Ñ¶·þÎñÆ÷ÿÃëÐèÒª´¦Àí´óÁ¿½ø³öµÄÊý¾Ý°ü£¬ÐèÒª½âÎö£¬·Ö½â³É²»Í¬µÄÒµÎñÂß¼­¶ÔÏó²¢×öÏà¹ØµÄÒµÎñ´¦Àí£¬ÕâÑù»áµ¼Ö´óÁ¿µÄÁÙʱ¶ÔÏó±»´´½¨ºÍ»ØÊÕ¡£Í¬Ê±·þÎñÆ÷Èç¹ûÐèҪͬʱ±£´æÓû§×´Ì¬µÄ»°£¬ÓÖ»á²úÉúºÜ¶àÓÀ¾ÃµÄ¶ÔÏ󣬱ÈÈçÓû§session¡£Ò ......

JavaǶÈëʽ¼¼Êõ

Ò»¡¢ÒýÑÔ
1991Äê,Sun MicroSystem¹«Ë¾ÓÉJames Gosling¡¢Bill JoeµÈÈË×é³ÉµÄGreenС×鿪·¢ÁË
Ò»¸öÃûΪOakµÄÈí¼þ(JavaµÄǰÉí),Ä¿µÄÊÇÓÃÓÚµçÊӵȼÒÓõçÆ÷µÄǶÈëʽӦÓᣵ«ºóÀ´,ÕýÈç
ÎÒÃÇÏÖÔÚËùÖªµÀµÄÄÇÑù,JavaµÄ·¢Õ¹È´³öºõËüµÄ¿ª·¢ÕßµÄÔ¤ÁÏ,Ëü²¢Ã»ÓÐÔÚǶÈëʽӦÓÃÖдóÕ¹
ÉíÊÖ,µ«È´·çÃÒWWWÊÀ½ç¡£
Èç½ñ,JavaÓ¦ÓóÌÐòÔÚIntern ......

Java³£ÓÃÕýÔò±í´ïʽ

"^\d+$"¡¡¡¡//·Ç¸ºÕûÊý£¨ÕýÕûÊý + 0£©
"^\[0-9\]*\[1-9\]\[0-9\]*$"¡¡¡¡//ÕýÕûÊý
"^((-\d+)\|(0+))$"¡¡¡¡//·ÇÕýÕûÊý£¨¸ºÕûÊý + 0£©
"^-\[0-9\]*\[1-9\]\[0-9\]*$"¡¡¡¡//¸ºÕûÊý
"^-?\d+$"¡¡¡¡¡¡¡¡//ÕûÊý
"^\d+(\.\d+)?$"¡¡¡¡//·Ç¸º¸¡µãÊý£¨Õý¸¡µãÊý + 0£©
"^((\[0-9\]+\.\[0-9\]*\[1-9\]\[0-9\]*)\|(\[0-9\]*\[1-9\]\[ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ