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

JAVA¶¨Ê±Æ÷ʹÓÃ,×ªÔØ2~

JAVA¶¨Ê±Æ÷£¨java.util.Timer£©
2009Äê07ÔÂ30ÈÕ ÐÇÆÚËÄ ÏÂÎç 02:17
¡¾1¡¿Java ¶¨Ê±Æ÷£¨java.util.Timer£©Óж¨Ê±´¥·¢¼Æ»®ÈÎÎñµÄ¹¦ÄÜ£¬Í¨¹ýÅäÖö¨Ê±Æ÷µÄ¼ä¸ôʱ¼ä£¬ÔÚijһ¼ä¸ôʱ¼ä¶ÎÖ®ºó»á×Ô¶¯ÓйæÂɵĵ÷ÓÃÔ¤ÏÈËù°²Åŵļƻ®ÈÎÎñ£¨java.util.TimerTask£©¡£Óëÿ¸ö Timer ¶ÔÏóÏà¶ÔÓ¦µÄÊǵ¥¸öºǫ́Ị̈߳¬ÓÃÓÚ˳ÐòµØÖ´ÐÐËùÓмÆÊ±Æ÷ÈÎÎñ¡£¼ÆÊ±Æ÷ÈÎÎñÓ¦¸ÃѸËÙÍê³É¡£Èç¹ûÍê³Éij¸ö¼ÆÊ±Æ÷ÈÎÎñµÄʱ¼äÌ«³¤£¬ÄÇôËü»á“¶ÀÕ¼”¼ÆÊ±Æ÷µÄÈÎÎñÖ´ÐÐÏ̡߳£Òò´Ë£¬Õâ¾Í¿ÉÄÜÑÓ³ÙºóÐøÈÎÎñµÄÖ´ÐУ¬¶øÕâЩÈÎÎñ¾Í¿ÉÄÜ“¶ÑÔÚÒ»Æð”£¬²¢ÇÒÔÚÉÏÊö²»ÓѺõÄÈÎÎñ×îÖÕÍê³Éʱ²ÅÄܹ»±»¿ìËÙÁ¬ÐøµØÖ´ÐС£ÁíÍ⣬ÓÉÓÚÎÒÃÇÏ£Íûµ±Web¹¤³ÌÆô¶¯Ê±£¬¶¨Ê±Æ÷ÄÜ×Ô¶¯¿ªÊ¼¼ÆÊ±£¬ÔÚÕû¸öWeb¹¤³ÌµÄÉúÃüÆÚÀ¶¨Ê±Æ÷ÄÜÔÚÿÍíÉîÒ¹´¥·¢Ò»´Î±¨±í¼ÆËãÒýÇæÌìµÈ¡£Òò´Ë¶¨Ê±Æ÷µÄ´æ·ÅλÖÃÒ²ÖµµÃ¿¼²é£¬²»Äܼòµ¥µÄ´æÔÚÓÚµ¥¸öServlet»òJavaBeanÖУ¬±ØÐëÄÜÈö¨Ê±Æ÷ËÞÖ÷µÄ´æ»îÆÚΪÕû¸öWeb¹¤³ÌÉúÃüÆÚ£¬ÔÚ¹¤³ÌÆô¶¯Ê±ÄÜ×Ô¶¯¼ÓÔØÔËÐС£½áºÏÕâÁ½µã£¬¸úServletÉÏÏÂÎÄÓйصļàÌýÆ÷¾Í×îºÏÊʲ»¹ýÁË£¬Í¨¹ýÔÚ¹¤³ÌµÄÅäÖÃÎļþÖмÓÒÔ ºÏÀíÅäÖ㬻áÔÚ¹¤³ÌÆô¶¯Ê±×Ô¶¯ÔËÐУ¬²¢ÔÚÕû¸ö¹¤³ÌÉúÃüÆÚÖд¦ÓÚ¼àÌý״̬¡£    
    ÏÂÃæ¾ÍServlet¼àÌýÆ÷½áºÏJava ¶¨Ê±Æ÷À´½²ÊöÕû¸öʵÏÖ¹ý³Ì¡£ÒªÔËÓÃServlet¼àÌýÆ÷ÐèҪʵÏÖjavax.servlet.ServletContextListener½Ó¿Ú£¬Í¬Ê±ÊµÏÖËüµÄcontextInitialized(ServletContextEvent event)ºÍcontextDestroyed(ServletContextEvent event)Á½¸ö½Ó¿Úº¯Êý¡£¿¼ÂǶ¨Ê±Æ÷Óиö½¨Á¢ºÍÏú»ÙµÄ¹ý³Ì£¬¿´ÁËÇ°ÃæÁ½¸ö½Ó¿Úº¯Êý£¬¾Í²»ÈÝÖÃÒɵİѽ¨Á¢µÄ¹ý³ÌÖÃÈë contextInitialized£¬°ÑÏú»ÙµÄ¹ý³ÌÖÃÈëcontextDestroyedÁË¡£
package com.korby.servlet;
import javax.servlet.*;
import javax.servlet.http.*;
import com.korby.pub.TimerManager;
/**
* Æô¶¯¶¨Ê±Æ÷µÄ¼àÌýÆ÷
* @author korby
* @version 1.0
*/
public class TimerListener implements ServletContextListener {
    private TimerManager tm = null;
    public void contextInitialized(ServletContextEvent sce) {
      int day,hour,min,sec;      
       day = 26; hour = 16; min = 42; sec = 0;     
    


Ïà¹ØÎĵµ£º

Java NIO APIÏê½â

 
Java NIO APIÏê½â
ÔÚJDK
1.4ÒÔǰ£¬JavaµÄIO²Ù×÷¼¯ÖÐÔÚjava.ioÕâ¸ö°üÖУ¬ÊÇ»ùÓÚÁ÷µÄ×èÈû£¨blocking£©API¡£¶ÔÓÚ´ó¶àÊýÓ¦ÓÃÀ´Ëµ£¬ÕâÑùµÄAPIʹÓúܷ½
±ã£¬È»¶ø£¬Ò»Ð©¶ÔÐÔÄÜÒªÇó½Ï¸ßµÄÓ¦Óã¬ÓÈÆäÊÇ·þÎñ¶ËÓ¦Óã¬ÍùÍùÐèÒªÒ»¸ö¸üΪÓÐЧµÄ·½Ê½À´´¦ÀíIO¡£´ÓJDK 1.4Æð£¬NIO
API×÷Ϊһ¸ö»ùÓÚ»º³åÇø£¬²¢ÄÜÌṩ·Ç×èÈû(non-blo ......

JavaÓʼþȺ·¢Æ÷

JavaÓʼþȺ·¢Æ÷
 ¹¦ÄÜ˵Ã÷£º
  1¡¢ÅúÁ¿Ñ­»··¢ËÍÓʼþ
  2¡¢·¢ËÍHTMLÎļþ£¬´ý·¢Ë͵ÄÓʼþÒÔhtmµÄ¸ñʽ´æ·Å£¬¿ÉÒÔÊÇÍøÂçÉϵÄhtmÎļþ£¬¿ÉÒÔÊDZ¾µØµÄhtmÎļþ
  3¡¢¿ÉÒÔÖ¸¶¨·¢Ë͸½¼þµÄĿ¼£¬ÏµÍ³»á¼ÓÔØÖ¸¶¨Ä¿Â¼µÄÈ«²¿¸½¼þÒ»Æð·¢ËÍ
  4¡¢·¢ËÍÓʼþÒÔtxtÎļþ±£´æ£¬Ã¿Ðб£´æÒ»¸öÓʼþ ......

javaÊý¾Ý¿âµÈ——ÂÒÂëÎÊÌâ½â¾ö°ì·¨

ÖÐÎÄÂÒÂë½â¾ö·½°¸£º
Êý¾Ý¿âÂÒÂë:
UTF-8¶ÔÖÐÎÄÓÃ3¸ö×Ö½ÚÀ´±íʾ
String s =”·ÉÏè”;
byte[] utf8 = s.getBytes(“utf-8”);//»ñµÃutf-8±àÂëµÄ×Ö½ÚÖµ
System….(new String(utf8,”gbk”);//ÓÃGBK±àÂë¸ñʽ¶ÔUTF-8±àÂë¸ñʽµÄ×Ö½ÚÊý×é½øÐнâÂ룬½«²úÉúÂÒÂë¡£
 
²é¿´Êý¾Ý¿âµÄ× ......

JavaÖÐ ObjectµÄ·½·¨


¹¹Ôì·½·¨ÕªÒª
Object()
           
·½·¨ÕªÒª
protected Object clone()
           ´´½¨²¢·µ»Ø´Ë¶ÔÏóµÄÒ»¸ö¸±±¾¡£
boolean equals(Object obj)
       &n ......

żÏñ³ç°Ý——¡¶JavaҹδÃß¡·½ÚÑ¡

żÏñ³ç°Ý£¨Ò»£©
ÄãµÄżÏñÊÇË­£¿ÔÚ¸ßÖÐʱ´ú£¬ÎÒµÄżÏñÊÇÊãÇéÀËÂþ¡¢¸ß¿º¼¤°ºµÄ¿ÕÖв¹¸ø£¨Air Supply£©ÒÔ¼°¾²Èç´¦×Ó¡¢¶¯ÈçÍÑÍõĿ­Àò·Ã×Â壨Kylie Minogue£©£»ÏÖÔÚÎÒµÄżÏñÊÇDavid Flanagan¡¢Jonathan Knudsen¡¢Elliotte Rusty Harold¡¢Bruce EckelµÈÈË¡£ÄãÎÊÎÒDavid FlanaganµÈÈ˳ª¹ýʲô¸è£¬à¸£¡ÄãÎó»áÁË£¬ËûÃDz» ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ