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

·¢ÏÖÒ»¸öc++¶à̬Óëjava¶à̬²»Í¬µÄµØ·½

¸Õ¸Õ¿´µ½Ò»ÆªÎÄÕÂÌá³öc++¶à̬Óëjava¶à̬²»Í¬µÄµØ·½£¬»ù±¾Òâ˼ÈçÏ£º
Çë¿´C++´úÂ룺
class Base
{
public:
 Base()
 {
  init(); 
 }
 virtual ~Base() {}
protected:
 int value;
 virtual void init() 
 { 
  value = 100;     
 }
};
class Derived : public Base
{
public:
 Derived()
 {
  init();
 }
protected:
 void init() 
 {
  cout << "value = " << value << endl;
  // ×öһЩ¶îÍâµÄ³õʼ»¯¹¤×÷ 
 }
};
int main(int argc, char* argv[])
{
 Base* pb;
 pb = new Derived();
 delete pb;
 return 0;
}
Ö´Ðнá¹ûÊÇ
value = 100
ÔÙ¿´java´úÂ룺
class Base
{
  public Base()
  {
    init();
  }
  protected int value;
  protected void init()
  {
         value = 100;  
  }
}
class Derived extends Base
{
  public Derived()
  {
    init();
  }
  protected void init()
  {
    System.out.println("value = " + value);
    // ×öһЩ¶îÍâµÄ³õʼ»¯¹¤×÷
  }
}
public class Test
{
  public static void main(String[] args)
  {
    Base base = new Derived();
  }
}
Ö´Ðнá¹ûÊÇ
value = 0
value = 0
ÔÚjavaÖÐ×ÓÀàµÄinit·½·¨ÖØÐ´Á˸¸ÀàµÄinit·½·¨£¬µ¼Ö²»ÄÜÕýÈ·Íê³É³õʼ»¯¡£¿´µ½ÕâÀïÎÒ˼¿¼ÁËһϣ¬ÓÉÓÚ×ÓÀàÖØÐ´Á˸¸ÀàµÄͬÃûº¯Êý£¬²Åµ¼Ö±¾Ó¦¸ÃÖ´Ðеĺ¯ÊýûÓÐÖ´ÐУ¬Èç¹ûÐ޸ĸ¸ÀàµÄ³õʼ»¯º¯Êý»òÕß×ÓÀàµÄ³õʼ»¯º¯Êý£¬Ê¹×ÓÀ಻»á·¢ÉúÖØÐ´£¬ÊDz»ÊǾͲ»»á·¢ÉúÉÏÃæµÄÇé¿ö£¿»òÐí¼´Ê¹ÊÇ×ÓÀàÓ븸À࣬µ±Éæ¼°µ½¸÷×Եijõʼ»¯µÄµØ·½Ê±¾Í²»Ó¦¸ÃʹÓöà̬ÐÔ¡£


Ïà¹ØÎĵµ£º

Thinking in Java Ö®String ÕýÔò±í´ïʽ

       Ê²Ã´ÊÇÕýÔò±í´ïʽ£¿
       ÕýÔò±í´ïʽÊÇÒ»ÖÖÇ¿´ó¶øÁé»îµÄÎı¾´¦Àí¹¤¾ß¡£Ê¹ÓÃÕýÔò±í´ïʽ£¬ÎÒÃÇÄܹ»ÒÔ±à³ÌµÄ·½Ê½£¬¹¹Ô츴ÔÓµÄÎı¾Ä£Ê½£¬²¢¶ÔÊäÈëµÄ×Ö·û´®½øÐÐËÑË÷¡£Ò»µ©ÕÒµ½ÁËÆ¥ÅäÕâЩģʽµÄ²¿·Ö£¬Äã¾ÍÄܹ»ËæÐÄËùÓûµØ¶ÔËüÃǽøÐд¦Àí¡£ÕýÔò±í´ïÊ½Ì ......

domino java ´úÀíµ÷ÓÃÊÜÏÞÖÆÀà






  ÔÚDOMINOÖÐʹÓÃHibernateʱ£¬»á³öÏÖÒÔϵĴíÎó£º
ÎÊÌâÊÇÓÉÓÚdomino jre µÄĬÈϰ²È«²»Ö§³ÖReflectPermission "suppressAccessChecks";
ÔÚDOMINO JVMµÄ°²È«²ßÂÔÎļþÖмÓÈë
permission java.lang.reflect.ReflectPermission
" ......

Java µ÷Óà .Net Web Service ÎÊÌâ½â¾ö·½·¨·ÖÏí

Óкܳ¤Ò»¶Îʱ¼äûÓÐд²©¿ÍÁË¡£×î½üÒ»Ä꣬ÊÕµ½²»ÉÙ½»Á÷Óʼþ¶¼ÊǹØÓÚwebservice£¬´ó²¿·Ö¶¼ÊÇËØÒªwebserviceʵÀý¡£
Æäʵ¶Ôwebservice Á˽ⲻÊǺÜÉֻÊǸù¾Ý¹¤×÷ÐèҪȥ½Ó´¥£¬È¥Ñ§Ï°¡£×î½üÏîÄ¿ºÍÆäËûÒ»¸ö.netÏîÄ¿ÐèÒª×öÊý¾Ý½»»¥£¬½»»¥·½Ê½¾Í²ÉÓÃWebservice.
ÌØ½«¿ª·¢ÖÐÓöµ½µÄÎÊÌâ×ܽᲢ·ÖÏí£»
¿ª·¢ÖÐÓöµ½µÄÎÊÌâÓУº
1£©jav ......

java ¶¨Ê±±¸·ÝposgreSQLÊý¾Ý¿â

Ê×ÏÈÎÒÃÇÒªÏÈдһ¸ö±¸·ÝÀà
BackupDb.java
´úÂëÈçÏ£º
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class BackupDb {
public BackupDb() {
}
public String back ......

JavaÐòÁл¯¼òÃ÷¸ÅÒª

1. ¸ÅÄ ÐòÁл¯¾ÍÊǰѶÔÏó±ä³É¶ÔÏóÁ÷£¨È·ÇÐ˵ÊǰѶÔÏóµÄÊôÐÔдÈëÁ÷£©£¬Èç¹ûÐèÒª½ø¶ø¿ÉÒ԰ѶÔÏóÁ÷´æ³É¶þ½øÖÆÎļþ£»
2. Ä¿µÄ£º ÐòÁл¯µÄÄ¿µÄÊÇΪÁË·½±ãÓÀ¾Ã´æ´¢»òÕßÍøÂç´«Ê䣻
3. ÈçºÎʵÏÖ£º ½«ÀàʵÏÖSerializable½Ó¿Ú¼´¿É£¬ÎÞ±ØÐëʵÏֵķ½·¨£¬ÊµÏָýӿÚÖ»ÊÇΪÁ˱êʶ¸ÃÀà¿É±»ÐòÁл¯£»
4. £¨×ª£©ÆäËûÐèÒªÖªµÀµÄ£º
  ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ