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
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 ......
×î½ü¿´µ½µÄһƪÎÄÕ£¬¾õµÃдµÄͦºÃ£¬¾Íת¹ýÀ´ÒÔ±ã×Ô¼ºÀ´¿´¡£
¿´µ½ÂÛ̳ÀïÓиöÌû×ÓÔÚÌÖÂ۽ӿںͳéÏóÀàµÄÇø±ðºÍ×÷Óã¬ÕâÆäʵҲÊǺܶàÃæÊÔ¹Ùϲ»¶ÎʵÄÎÊÌ⣬ÕâÀïÎÒ¾Í˵˵ÎÒµÄ×ܽᣬ˳±ã˵˵ÄÚ²¿ÀàµÄ×÷Ó㬵±ÊǸø¸ÕÈëÃÅ£¬»òÕßÏëѧϰjavaµÄͬѧÃÇÄܸüºÃµÄÀí½âËüÃǵÄÓ÷¨¡£
1.½Ó¿Ú(interface)£¬½Ó¿Ú±»ÓÃÀ´½¨Á¢ÀàÓëÀàÖ®¼ä¹ØÁªµÄ±ê× ......
¡¡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/… ......
/*===================MXML´úÂë==================*/
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Button label="²âÊÔArray" click="bk()"/>
<mx:Script>
<!--[CDATA[
import mx.collection ......
¡¡ÔÚJavaÓïÑÔÖУ¬ abstract class ºÍinterface ÊÇÖ§³Ö³éÏóÀඨÒåµÄÁ½ÖÖ»úÖÆ¡£ÕýÊÇÓÉÓÚÕâÁ½ÖÖ»úÖÆµÄ´æÔÚ£¬²Å¸³ÓèÁËJavaÇ¿´óµÄ ÃæÏò¶ÔÏóÄÜÁ¦¡£abstract classºÍinterfaceÖ®¼äÔÚ¶ÔÓÚ³éÏóÀඨÒåµÄÖ§³Ö·½Ãæ¾ßÓкܴóµÄÏàËÆÐÔ£¬ÉõÖÁ¿ÉÒÔÏà»¥Ìæ»»£¬Òò´ËºÜ¶à¿ª·¢ÕßÔÚ½ø ÐгéÏóÀඨÒåʱ¶ÔÓÚabstract classºÍinterfaceµÄÑ¡ÔñÏԵñȽÏËæ ......