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

Java¡¢JSP¡¢HTML¡¢XML±àд¶¼Òª·ûºÏÒÔϱàÂë¹æÔò£¡

1 ËùÓÐµÄ .java|.jsp|.html|.xml Ô´Îļþ¾ùʹÓÃutf-8±àÂë¸ñʽ±£´æµ½ÏµÍ³´ÅÅÌ¡£
È磺ÔÚEclipseÖб༭Îļþ£¬Ñ¡ÖÐÎļþ´ò¿ªÓÒ¼ü²Ëµ¥Ñ¡ÔñÊôÐÔ£¬½«Îı¾Îļþ±àÂëÉèÖÃΪÆäËû²¢Ñ¡ÔñUTF-8£»Ò²¿ÉÒÔÔÚ
Eclipse——Ê×Ñ¡Ïî——³£¹æ——ÄÚÈÝÀàÐÍÖÐÉèÖø÷ÖÖÎļþµÄȱʡ±àÂ룬ÕâÑùÒÔºóËùÓеÄÎı¾Îļþ¶¼Ê¹ÓÃÍ³Ò ......

¡¾×ª¡¿ÓÅÐãJava³ÌÐòÔ±±ØÐëÁ˽âµÄGC¹¤×÷Ô­Àí

Ò»¸öÓÅÐãµÄJava³ÌÐòÔ±±ØÐëÁ˽âGCµÄ¹¤×÷Ô­Àí¡¢ÈçºÎÓÅ»¯GCµÄÐÔÄÜ¡¢ÈçºÎÓëGC½øÐÐÓÐÏ޵Ľ»»¥£¬ÒòΪÓÐһЩӦÓóÌÐò¶ÔÐÔÄÜÒªÇó½Ï¸ß£¬ÀýÈçǶÈëʽϵͳ¡¢ÊµÊ±ÏµÍ³µÈ£¬Ö»ÓÐÈ«ÃæÌáÉýÄÚ´æµÄ¹ÜÀíЧÂÊ £¬²ÅÄÜÌá¸ßÕû¸öÓ¦ÓóÌÐòµÄÐÔÄÜ¡£±¾ÆªÎÄÕÂÊ×Ïȼòµ¥½éÉÜGCµÄ¹¤×÷Ô­ÀíÖ®ºó£¬È»ºóÔÙ¶ÔGCµÄ¼¸¸ö¹Ø¼üÎÊÌâ½øÐÐÉîÈë̽ÌÖ£¬×îºóÌá³öһЩJava³ÌÐòÉ ......

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/… ......

Java±à³Ì£ºÊµÀý·ÖÎöJ2MEÍøÂç±à³ÌµÄÁ½ÖÖ·½·¨


ºËÐÄÌáʾ£º±¾ÎÄÃèÊöÁËÔÚJ2meÖпª·¢Ö÷ҪʹÓõÄÍøÂçÁ¬½Ó·½·¨£¬·Ö±ðÏêϸ½éÉÜÁËʹÓÃhttpºÍsocketÁ½ÖÖ·½·¨¡£ HttpConnection Ê×ÏÈÎÒÃÇÏÈÀ´¿´Ò»¸ö¼òµ¥µÄÀý×Ó°É£º Ö÷ÒªÓõ½µÄjava°ü£º javax.microedition.io.*; public String requestGET(String URLString,String URL) throws
±¾ÎÄÃèÊöÁËÔÚJ2meÖпª·¢Ö÷ҪʹÓõÄÍøÂçÁ¬½Ó·½·¨£¬ ......

java²Ù×÷pdf

È»jacobÖÐÒ²ÓйØÓÚPDFµÄ·½·¨£¬µ«ÊǹýÓÚ¸´ÔÓ¡£iTextÊÇÒ»¸ö¿ªÔ´µÄPDF¹¤¾ß£¬Ð¡ÇɶøÓÖ±ã½Ý¡£
¹Ù·½ÍøÕ¾ÊÇ£ºhttp://www.lowagie.com/iText/
¹Ù·½µÄ½âÊÍ£ºiText is a library that allows you to generate PDF files . the fly
×îа汾Ϊ£º2.1.5
ÏÂÔØµØÖ·ÊÇ£ºhttp://nchc.dl.sourceforge.net/sourceforge/itext/iText-2.1.5.j ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ