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

java»ù´¡ÃæÊÔÌâ

1.Çëд³öÏÂÁÐJava´úÂëµÄÊä³ö½á¹û  
  package   test;  
  public   class   FatherClass()  
      {   public   FatherClass()  
            {     System.out.println("FatherClass     Create");}  
            }  
          ×ÓÀࣺ  
      package   test;  
        import   test.FatherClass;  
        public   class     ChildClass   extends     FatherClass  
        {  
            public   ChildClass()  
              {     System.out.println("ChildClass   Create");     }  
          public   static   void   main(String[]     args)  
            {       FatherClass   fc=new   FatherClass();  
                  ChildClass     cc=new   ChildClass();     }      
            }  
      &nbs


Ïà¹ØÎĵµ£º

JAVAÀà×°ÔØÆ÷classloaderºÍÃüÃû¿Õ¼änamespace

JAVAÀà×°ÔØÆ÷classloaderºÍÃüÃû¿Õ¼änamespace
  JAVAÐéÄâ»úͨ¹ý×°ÔØ¡¢Á¬½ÓºÍ³õʼ»¯Ò»¸öJAVAÀàÐÍ£¬Ê¹¸ÃÀàÐÍ¿ÉÒÔ±»ÕýÔÚÔËÐеÄJAVA³ÌÐòËùʹÓá£ÆäÖУ¬×°ÔؾÍÊǰѶþ½øÖÆÐÎʽµÄJAVAÀàÐͶÁÈëJAVAÐéÄâ»úÖС£Á¬½Ó¾ÍÊǰÑÕâÖÖÒѾ­¶ÁÈëÐéÄâ»úµÄ¶þ½øÖÆÐÎʽµÄÀàÐÍÊý¾ÝºÏ²¢µ½ÐéÄâ»úµÄÔËÐÐʱ״̬ÖÐÈ¥¡£Á¬½Ó½×¶Î·ÖΪÈý¸ö²½Ö裭ÑéÖ¤¡¢× ......

¼ò»¯JavaÈÕÆÚ²Ù×÷µÄ¿ªÔ´ÏîÄ¿DATE4J£¬³¬¼¶ºÃÓÃ

ÒÔÍùҪʹÓÃJava¶Ôʱ¼äÈÕÆÚ½øÐвÙ×÷£¬¿ÉÄÜ»áÓõ½ÒÔϵÄһЩÀࣺ
Date and its subclasses :
java.util.Date
java.sql.Date
java.sql.Timestamp
The calendar and time zone classes :
java.util.Calendar
java.util.GregorianCalendar
java.util.TimeZone
java.util.SimpleTimeZone
(for use with the Gregorian ......

java web applicationÖи÷ÖÖ·¾¶µÄÈ¡µÃ·½·¨

¾­³£Íü¼ÇÕâЩ»ù´¡µÄ¶«Î÷£¬¼ÇÏÂÀ´ÁË¡£
ÔÚjspºÍclassÎļþÖе÷ÓõÄÏà¶Ô·¾¶²»Í¬¡£ ÔÚjspÀ¸ùĿ¼ÊÇWebRoot ÔÚclassÎļþÖУ¬¸ùĿ¼ÊÇWebRoot/WEB-INF/classes µ±È»ÄãÒ²¿ÉÒÔÓÃSystem.getProperty("user.dir")»ñÈ¡Ä㹤³ÌµÄ¾ø¶Ô·¾¶¡£
Áí:ÔÚJsp,Servlet,JavaÖÐÏêϸ»ñµÃ·¾¶µÄ·½·¨!
1.jspÖÐÈ¡µÃ·¾¶£º
ÒÔ¹¤³ÌÃûΪTESTΪÀý£º
......

javaÖеĽӿÚ

        javaÖнӿÚÔÚ¿ª·¢ÖÐÕ¼ÖØÒªµØÎ»
   £¨1£©½Ó¿ÚÖеÄËùÓз½·¨¶¼ÊÇpublic abstract
   £¨2£©ÔÚ½Ó¿ÚÖÐÉùÃ÷·½·¨Ê±£¬²»ÄÜʹÓÃnative£¬static£¬final£¬synchronized£¬private£¬protectµÈÐÞÊηû£¬¼´Ö»ÄÜʹÓÃpublic abstract£¨Ä¬ÈÏ£©
    ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ