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

java ¶à̬(2)

(±¾ÎÄ×ªÔØ)
Ô­ÎÄ£ºhttp://blog.csdn.net/thinkghoster/archive/2008/04/19/2307001.aspx
class
 A
...
{
         
public
 String show(D obj)
...
{
                
return
 (
"
A and D
"
);
         }
 
         
public
 String show(A obj)
...
{
                
return
 (
"
A and A
"
);
         }
 
}
 
class
 B 
extends
 A
...
{
         
public
 String show(B obj)
...
{
                
return
 (
"
B and B
"
);
         }
         
public
 String show(A obj)
...
{
                
return
 (
"
B and A
"
);
         }
 
}
class
 C 
extends
 B
...
{}
 
class
 D 
extends
 B
...
{}
A a1 
=
 
new
 A();
        A a2 
=
 
new
 B();
        B b =
new
 B();
        C c 
=
 
new
 C(); 
        D d 
=
 
new
 D(); 
&nbs


Ïà¹ØÎĵµ£º

JAVA³£ÓòÙ×÷Óï¾ä ÏîÄ¿ÖеÄ×ܽá¶þ


jspÊä³ö¸ñʽ»¯ºóµÄÈÕÆÚ
<fmt:formatDate value="${whiteNumber.crtdate }" pattern="yyyy-MM-dd HH:mm:ss"/>
ÈçÊÇmodelÀïµÄlistÔÚactionÖÐÈ¡²»µ½Öµ¡£¿ÉÄÜÔÚ¸ÃmodelÖеÄlistµÄsetterºÍgetter·½Ê½ÖУ¬Ê¹ÓõĿÉÄÜÊÇlazy¼ÓÔØ£¬¸ÄΪEAGER¼´¿É¡£
<s:iterator>±êÇ©ÀﻹÓÐ<s:iterator>± ......

JAVA ÈÕÆÚÏà¹Ø£¨×ªÔØ£©

/**
* ÓйØÈÕÆÚ¹¤¾ßÀà(extends TimeUtil)
*
* TimeUtilÖ÷Òª¹¦ÄÜÓУº
* 1.¸÷ÖÖÈÕÆÚÀàÐÍ£¨×Ö·û£¬util.Date£¬sql.Date£¬CalendarµÈ£©×ª»»
* 2.»ñȡָ¶¨ÈÕÆÚµÄÄê·Ý£¬Ô·ݣ¬ÈÕ·Ý£¬Ð¡Ê±£¬·Ö£¬Ã룬ºÁÃë
* 3.»ñÈ¡µ±Ç°/ϵͳÈÕÆÚ(Ö¸¶¨ÈÕÆÚ¸ñʽ)
* 4.»ñÈ¡×Ö·ûÈÕÆÚÒ»¸öÔµÄÌìÊý
* 5.»ñȡָ¶¨Ô·ݵĵÚÒ»Ìì,×îºóÒ»Ìì
*
* Date ......

JAVA¼¼ÇÉ:´ò°üwarµÄ¼¸ÖÖ·½·¨

¡¡1.Ê×ÏÈÊǹ¤¾ß±ÈÈçEclipseºÜ·½±ãÁË¡£
¡¡¡¡2.ÓÃwinrarÖ®ÀàµÄ¹¤¾ß£¬°Ñweb-infoĿ¼£¬¼°¸úËüͬ¼¶µÄËùÓÐĿ¼¼°Îļþ£¬´ò°ü³É zipÎļþ¾ÍÐÐÁË£¬È»ºó°ÑÀ©Õ¹Ãû¸Ä³Éwar!
¡¡¡¡3 JarÃüÁ
¡¡¡¡¼Ù¶¨ÓÐÒ»¸öWebÓ¦ÓãºC:\myHome
¡¡¡¡ myHome/WEB-INF/……
¡¡¡¡myHome/files/……
¡¡¡¡myHome/image/… ......

java²Ù×÷pdf£¨½â¾öÖÐÎĵ¼³öÎÊÌ⣩


Java iText ¶¯Ì¬ Éú³É PDF Îĵµ ±í¸ñ ÖÐÎÄÎÊÌâ
 
iTextÊÇÒ»¸ö¿ª·¢Ô´´úÂëµÄÏîÄ¿£¬Äã¿ÉÒÔʹÓÃiText·½±ãµÄʵÏÖPDFµÄÊä³ö¡£
 
 
Ò»¡¢iTextµÄÏÂÔØ£º
    Äã¿ÉÒÔÔÚ http://www.lowagie.com/iText/ ²é¿´¹ØÓÚiTextµÄÏà¹ØÐÅÏ¢£¬°üÀ¨Ô´´úÂ룬Îĵµ..
    1. itext-src-1.4 ......

JavaÖеļ̳Ð

  1.¼Ì³ÐµÄ»ù±¾¸ÅÄî
     µ±¶à¸öÀàÖ®¼ä´æÔÚÏàͬµÄÊôÐԺͷ½·¨Ê±£¬ÔÚ¸¸ÀàÖж¨ÒåÕâЩÏàͬµÄÊôÐԺͷ½·¨£¬ËùÓеÄ×ÓÀàÎÞÐèÖØÐ¶¨ÒåÕâЩÊôÐԺͷ½·¨£¬Ö»ÐèҪͨ¹ýextendsÓï¾äÉùÃ÷¼Ì³ÐBaseÀà¡£
   £¨1£©¼Ì³ÐµÄ¶«Î÷
      a.µ±subÀàºÍbaseÀàλÓÚͬһ¸ö°üÖÐʱ£¬su ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ