Java Ö®´úÀíģʽ
´úÀíģʽ
´úÀíģʽµÄ×÷ÓÃ: ΪÆäËû¶ÔÏóÌṩһÖÖ´úÀíÒÔ¿ØÖƶÔÕâ¸ö¶ÔÏóµÄ·ÃÎÊ£¬ÔÚijЩÇé¿öÏ£¬Ò»¸ö¿Í»§²»Ïë»òÕß²»ÄÜÖ±½ÓÒýÓÃÁíÒ»¸ö¶ÔÏó£¬
¶ø´úÀí¶ÔÏó¿ÉÒÔÔÚ¿Í»§¶ËºÍÄ¿±ê¶ÔÏóÖ®¼äÆðµ½ ÖÐ½é µÄ×÷ÓÃ
¾ÙÒ»¸öÀý×Ó: ijһ¸öÈËÏëÇëÒ»¸ö¾Ö³¤ÎªËû°ìһЩÊÂÇé,Õâ¸öÈË¿ÉÄܲ»ÄÜÖ±½ÓÈ¥Õâ¸ö¾Ö³¤£¬ÒòΪ¾Ö³¤²»ÈÏʶËû£¬¼´Ê¹¿Í»§¸øËûËÍÀñ»òһЩǮ£¬¾Ö³¤Ò²²»»áÊÕ,ÕâʱºòÔõô°ì£¿¿Í»§¿ÉÒÔÏÈÈ¥ÕÒ¾Ö³¤µÄÃØÊé»òÉí±ßºìÈË£¬¾Ö³¤ÃØÊ鵱ȻÀ²£¬¸ú¾Ö³¤±È½ÏÃÜÇУ¬
Õâ¸ö¿Í»§ËûÈÏʶÕâ¸öÃØÊ飬Ëûͨ¹ýÃØÊ飬¸æËßÕâ¸öÃØÊ飬ÎÒÒªÏëÇë¾Ö³¤°ìЩʲôÊÂÇéÓÉÕâ¸öÃØÊéÈ¥Èþֳ¤È¥×öÕâ¸öÊÂÇ飬ËûÄØ£¬°ÑһЩËÍÀñ°¡£¬ÀñÆ·°¡Ë͸øÃØÊ飬ÓÉÃØÊéת½»¸ø¾Ö³¤¾Ö³¤ÊÕµ½ÃØÊ鏸ËûµÄÀñÎïÖ®ºó£¬Ëû¾Í¿ÉÒÔΪÕâ¸öÈ˰ìЩÊÂÇ飬ÕâʱºòÃØÊé¾ÍÏ൱ÓÚÊÇÖн顣
³éÏó½ÇÉ«£ºÏë°ìʵÄÈË
´úÀí½ÇÉ«£ºÃØÊé
ÕæÊµ½ÇÉ«£º¾Ö³¤£¬Ëû¾ßÓÐÍê³ÉËùÐèÒªµÄ¹¦ÄÜ
1.ʾÀý
Ö÷ҪʵÏÖ´úÂë,·Ö 4 ²½:
µÚÒ»²½ ³éÏó½ÇÉ«:
Subject.java
abstract public class Subject{ abstract public void request();}
µÚ¶þ²½´úÀí½ÇÉ«:
ProxySubject.java
public class ProxySubject{
private RealSubject realSubject; //ÒÔÕæÊµ½ÇÉ«×÷Ϊ´úÀí½ÇÉ«µÄÊôÐÔ
public ProxySubject(){}
public void request(){ //¸Ã·½·¨·â×°ÁËÕæÊµ¶ÔÏóµÄrequest·½·¨
preRequest();
if(realSubject == null)
{
realSubject = new RealSubject();
}
realSubject.request(); //´Ë´¦Ö´ÐÐÕæÊµ¶ÔÏóµÄrequest·½·¨,Õâ¾äÌåÏÖÁË´úÀí˼Ïë
postRequest();
}
private void preRequest(){
System.out.println("hello");
}
private void postRequest(){
System.out.println("world");
}
}
µÚÈý²½ ÕæÊµ½ÇÉ«
RealSubject.java
public class RealSubject{
public RealSubject(){}
public void request(){
System.out.println("from real request");
}
}
µÚËIJ½ ¿Í»§¶Ëµ÷ÓÃ:
Client.java
public class Client{
public static void main(String[] args){
Subject sub = new ProxySubject();
sub.
Ïà¹ØÎĵµ£º
1.»ù±¾¸ÅÄîµÄÀí½â
¾ø¶Ô·¾¶£º¾ø¶Ô·¾¶¾ÍÊÇÄãµÄÖ÷Ò³ÉϵÄÎļþ»òĿ¼ÔÚÓ²ÅÌÉÏÕæÕýµÄ·¾¶£¬(URLºÍÎïÀí·¾¶)ÀýÈ磺
C:xyz est.txt ´ú±íÁËtest.txtÎļþµÄ¾ø¶Ô·¾¶¡£http://www.sun.com/index.htmÒ²´ú±íÁËÒ»¸öURL¾ø¶Ô·¾¶¡£
Ïà¶Ô·¾¶£ºÏà¶ÔÓëij¸ö»ù׼Ŀ¼µÄ·¾¶¡£°üº¬WebµÄÏà¶Ô·¾¶£¨HTMLÖеÄÏà¶ÔĿ¼£©£¬ÀýÈ磺ÔÚ
Servl ......
ÎÄ˼ÐÅÏ¢¼¼ÊõÓÐÏÞ¹«Ë¾www.vanceinfo.com£¨Å¦½»ËùÉÏÊдúÂ룺VIT£©³ÉÁ¢ÓÚ1995Ä꣬ÊÇÒ»¼ÒÐÅÏ¢¼¼Êõ·þÎñÌṩÉ̼°ÔÚÖйú¾ÓÁìÏȵØÎ»µÄÀë°¶Èí¼þ¿ª·¢¹«Ë¾Ö®Ò»¡£ÎÄ˼ÊǵÚÒ»¼ÒÔÚŦԼ¹ÉƱ½»Ò×ËùÉÏÊеÄÖйúÈí¼þ·þÎñÍâ°üÆóÒµ¡£¾Ý¹ú¼ÊÊý¾Ý¹«Ë¾(IDC)µÄͳ¼Æ, ÒÔ2007ÄêÏúÊÛ¶îºâÁ¿, ÎÄ˼ÐÅÏ¢¼¼ÊõÔÚΪŷÃÀÊг¡ÌṩÀë°¶Èí¼þ¿ª·¢ÐÐÒµÖÐλ¾ÓÖйúµÚÒ ......
Êý¾ÝÀàÐÍ£º
(4Àà8ÖÖ)
Âß¼ÐÍ£boolean
×Ö·ûÐÍ£ char
ÊýÖµÐÍ£º
ÕûÊýÐÍ£ byte, short, int, long
¸¡µãÊýÐÍ£ float, double
·Java ÓïÑÔÖл¹ÔÊÐíʹÓÃתÒå×Ö·û ‘\’ À´½«ÆäºóµÄ×Ö·ûת±äΪÆäËüµÄº¬Òå.‘\n’´ú±í»»Ðзû
·JavaÕûÐͳ£Á¿Ä¬ÈÏΪintÐÍ£¬ÉùÃ÷lon ......
import java.lang.reflect.*;
public class A extends Thread {
public static void main(String[] args) throws Exception{
CC cc = new CC();
HH hh = new HH(cc);
II ii = (II) Proxy.newProxyInstance(H ......
ÎÊÌ⣺
·þÎñÆ÷ÊÇÓÃjavaдµÄ£¬¿Í»§¶ËÊÇÓÃactionscript(ʹÓÃamf3)дµÄ£¬µ«ÊÇ·þÎñÆ÷¶ËÖ»·¢ËÍÁËÁ½´ÎÐÅÏ¢£¬
¿Í»§¶ËÈ´½ÓÊÕµ½Èý´ÎÊý¾Ý£¬·þÎñÆ÷¶ËÒ²ÊÇͬÑùµÄÎÊÌ⣬½ÓÊÕµ½¿Í»§¶ËµÄÈý´ÎÊý¾Ý£¬µ«Êǿͻ§¶ËÒ²Ö»·¢ÁË
Á½´ÎÐÅÏ¢¡£
ÓÉÓÚsocket´«ÊäÊý¾ÝʱÊǰ´¹Ì¶¨µÄ´óС´«ËÍ×Ö½ÚÊý¾ÝµÄ£¬µ«ÊÇÔÚflash¿Í»§¶Ë¶ÁÈ¡µÄ
ʱºòÊÇ¿¿Ò» ......