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

javaÖеijéÏóÀ࣬½Ó¿Ú£¬ÄÚ²¿Àà

³éÏóÀà(abstract class)£º
    ÔÚclassǰ¼ÓÉÏabstractµÄÀà¾ÍÊdzéÏóÀ࣬È磺public abstract class A{};
    ÓÃabstract¹Ø¼ü×ÖÀ´ÐÞÊÎÒ»¸öÀàʱ£¬Õâ¸öÀà½Ð×ö³éÏóÀࣻÓÃabstractÀ´ÐÞÊÎÒ»¸ö·½·¨Ê±£¬¸Ã·½·¨½Ð×ö³éÏó·½·¨(³éÏó·½·¨Ã»Óз½·¨Ìå)¡£
    º¬ÓгéÏó·½·¨µÄÀà±ØÐë±»ÉùÃ÷Ϊ³éÏóÀ࣬³éÏóÀà±ØÐë±»¼Ì³Ð£¬³éÏó·½·¨±ØÐë±»ÖØÐ´¡£
    ³éÏóÀ಻Äܱ»ÊµÀý»¯¡£
    ³éÏó·½·¨Ö»ÐèÉùÃ÷£¬¶ø²»ÐèʵÏÖ¡£
    ÀàÖпÉÒÔûÓгéÏó·½·¨£¬µ«ÊdzéÏó·½·¨±ØÐëλÓÚ³éÏóÀàÖУ¡
    ×ÓÀà¼Ì³Ð³éÏóÀà±ØÐëÖØÐ´³éÏóÀàÀïÃæµÄÈ«²¿³éÏó·½·¨¡£
    ʹÓóéÏóÀàµÄΨһ;¾¶ÊÇÅÉÉúÒ»¸ö×ÓÀ࣬Èç¹ûÕâ¸ö×ÓÀàʵÏÖÁ˳éÏóÀàÖÐËùÓеijéÏó·½·¨£¬
ÄÇôÕâ¸ö×ÓÀà¾ÍÊÇÒ»¸öÆÕͨµÄÀà¡£Ëü¿ÉÒÔÓÃÀ´´´½¨¶ÔÏó¡£Èç¹û²»ÊµÏÖ¸¸ÀàÖеÄËùÓгéÏó·½·¨£¬
ÄÇôËüÒ²ÊÇÒ»¸ö³éÏóÀ࣬ʣÏµķ½·¨ÓÉËüµÄ×ÓÀàʵÏÖ¡£
³éÏó·½·¨²»ÄÜÊǾ²Ì¬·½·¨£¬ÒòΪ¾²Ì¬·½·¨ÎÞÐè¶ÔÏó¾ÍÄÜÖ´ÐС£
³éÏóÀ಻ÄÜnew³éÏóÀà¡£
½Ó¿Ú(interface)£º
    ´Ó±¾ÖÊÉϽ²£¬½Ó¿ÚÊÇÒ»ÖÖÌØÊâµÄ³éÏóÀ࣬ÕâÖÖ³éÏóÀàÖÐÖ»°üº¬³£Á¿ºÍ·½·¨µÄ¶¨Ò壬¶øÃ»ÓбäÁ¿ºÍ·½·¨µÄʵÏÖ¡£
    ¶à¸öÎ޹صÄÀà¿ÉÒÔʵÏÖͬһ¸ö½Ó¿Ú
     Ò»¸öÀà¿ÉÒÔʵÏÖ¶à¸öÎ޹صĽӿڣ¨½Ó¿Ú±äÏàµØÊµÏÖÁ˶à¼Ì³Ð£©
     Óë¼Ì³Ð¹ØÏµÀàËÆ£¬½Ó¿ÚÓëʵÏÖÀàÖ®¼ä´æÔÚ¶à̬ÐÔ
    ½Ó¿ÚÀïÃæÖ»ÄÜÓгéÏó·½·¨£¬µ«ÊÇÕâÖÖ³éÏó·½·¨Ã»ÓÐabstract¹Ø¼ü×Ö¡£
½Ó¿ÚÌØÐÔ£º
    ½Ó¿Ú¿ÉÒÔ¶àÖØÊµÏÖ£»
    ½Ó¿ÚÖÐÉùÃ÷µÄÊôÐÔĬÈÏΪpublic static finalµÄ£»Ò²Ö»ÄÜÊÇpublic static finalµÄ£»
    ½Ó¿ÚÖÐÖ»Äܶ¨Òå³éÏó·½·¨£¬¶øÇÒÕâЩ·½·¨Ä¬ÈÏΪpublicµÄ¡¢Ò²Ö»ÄÜÊÇpublicµÄ£»
    ½Ó¿Ú¿ÉÒÔ¼Ì³ÐÆäËüµÄ½Ó¿Ú£¬²¢Ìí¼ÓеÄÊôÐԺͳéÏó·½·¨¡£
½Ó¿Ú¶¨Òå¾ÙÀý
    public interface Runner {
        int id = 1;//ÕâÀïĬÈÏΪ³£Á¿
        public void start();
        public void run();
        public void stop();
    }
×ÛºÏÀý×Ó£º
    public interface Runn


Ïà¹ØÎĵµ£º

javaÖеÄtoString() ·½·¨£¨¶à¿´±¾ÎĵÄÀý×Ó£¡£©

toString() ·½·¨£º
    toString()·½·¨ÔÚObjectÀàÖж¨Ò壬Æä·µ»ØÖµÊÇStringÀàÐÍ£¬ÃèÊöµ±Ç°¶ÔÏóµÄÓйØÐÅÏ¢
    ÔÚ½øÐÐStringÓëÆäËüÀàÐÍÊý¾ÝµÄÁ¬½Ó²Ù×÷ʱ£¬×Ô¶¯µ÷ÓÃtoString()·½·¨
    ¿ÉÒÔ¸ù¾ÝÐèÒªÔÚÓû§×Ô¶¨ÒåÀàÐÍÖÐÖØÐ´toString()·½·¨
    »ù±¾ÀàÐÍÊý¾Ý× ......

Use Java Mail API to Send Email

private String smtpHost;
private String smtpUserName;
private String smtpPassword;
public void sendEmail(String fromAddress, List<String> toAddresses, List<String> ccAddresses,
String subject, String message) {
Properties props = new Properties();
props.put("mail.smtp.host", smt ......

Java¿ª·¢¹¤¾ß

eclipse¹Ù·½ÍøÕ¾
http://www.eclipse.org/downloads/
Eclipse 3.4M2¹Ù·½ÏÂÔØµØÖ· ´óС£º140M
http://download.actuatechina.com/eclipse/eclipse/downloads/drops/S-3.4M2-200709210919/eclipse-SDK-3.4M2-win32.zip
Eclipse Classic3.41 ´óС:151M
http://www.eclipse.org/downloads/download.php?file=/eclipse/down ......

Agile Java ѧϰ±Ê¼Ç£¨¶þ£© Æð²½

ÓÉÓÚÓÐÒ»¶¨µÄJavaºÍJUnitµÄ»ù´¡£¬ËùÒԸоõµÚÒ»¿Î±È½Ï¼òµ¥£¬µ«ÊÕ»ñ»¹ÊÇÓе쬱ÈÈçËµÖØ¹¹²¿·Ö½éÉܵÄÄÚÈÝ¡£
JUnitÒªµã£º
²âÊÔ·½·¨µÄÃüÃû¹æÔò£º
l  ·½·¨±ØÐëÉùÃ÷Ϊpublic
l  ·½·¨µÄ·µ»ØÖµ±ØÐëΪvoid
l  ·½·¨µÄÃû×Ö±ØÐëÒÔСдµÄtestΪǰ׺
l  ·½·¨²»ÄܽÓÊÜÈκβÎÊý
 
ÖØ¹¹Òªµã£º
1. &nbs ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ