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

ÒøÐбÊÊÔÌâ java±ÊÊÔÌâ

1¡¢×÷ÓÃÓòpublic,private,protected,ÒÔ¼°²»Ð´Ê±µÄÇø±ð
  ´ð£º
Çø±ðÈçÏ£º  
×÷ÓÃÓò           µ±Ç°Àà       ͬһpackage     ×ÓËïÀà      ÆäËûpackage  
public               √              √                 √                 √ 
protected         √              √                √                 ×  
 friendly            √              √               ×                 ×  
private              √              ×               ×                ×  
²»Ð´Ê±Ä¬ÈÏΪfriendly   
2¡¢Anonymous Inner Class (ÄäÃûÄÚ²¿Àà) ÊÇ·ñ¿ÉÒÔextends(¼Ì³Ð)ÆäËüÀ࣬ÊÇ·ñ¿ÉÒÔimplements(ʵÏÖ
)interface(½Ó¿Ú)   ´ð£ºÄäÃûµÄÄÚ²¿ÀàÊÇûÓÐÃû×ÖµÄ


Ïà¹ØÎĵµ£º

sql 2005 ´æ´¢¹ý³Ì·ÖÒ³ java ´úÂë

 create PROCEDURE pagelist
@tablename nvarchar(50),
@fieldname nvarchar(50)='*',         
@pagesize int output,--ÿҳÏÔʾ¼Ç¼ÌõÊý
@currentpage int output,--µÚ¼¸Ò³
@orderid nvarchar(50),--Ö÷¼üÅÅÐò
@sort int,--ÅÅÐò·½Ê½£¬1±íʾÉýÐò£¬0±íʾ½µÐòÅÅÁÐ ......

JAVA»ù´¡Êý¾ÝÀàÐÍ

Java ÌṩÁ½ÖÖ²»Í¬µÄÀàÐÍ£ºÒýÓÃÀàÐͺÍԭʼÀàÐÍ£¨»òÄÚÖÃÀàÐÍ£©¡£IntÊÇjavaµÄԭʼÊý¾ÝÀàÐÍ£¬IntegerÊÇjavaΪintÌṩµÄ·â×°Àà¡£JavaΪÿ¸öԭʼÀàÐÍÌṩÁË·â×°Àà¡£
ԭʼÀàÐÍ·â×°Àà
boolean -->Boolean
char --->Character
byte -->Byte
short -->Short
int -->Integer
long -->Long
float -- ......

´«ÖDz¥¿ÍµÄJAVA SE¸ß¼¶ÊÓÆµ1 API ×Ôѧ±Ê¼Ç

2009-12-20 22:15:02
½ñÌ컨ÁËÒ»Ììʱ¼ä°Ñ´«ÖDz¥¿ÍµÄJAVA SE¸ß¼¶ÊÓÆµ1 API¿´ÍêÁË£¬»¹¿´ÁËÒ»²¿·Ö¸ß¼¶Ê³Æ·2 IOµÄÊÓÆµ£¬ÒÔÏÂÊÇAPIµÄ±Ê¼Ç¡£
API: Application Programming Interface Ó¦ÓóÌÐò±à³Ì½Ó¿Ú
    windows API£ºwindowsϵͳÌṩµÄ
    JAVA API£ºJDKÖÐÌṩµÄ¸÷ÖÖjavaÀà(ÕÆÎÕ³£ÓõÄAPI ......

JavaλÔËËã·ûºÅ²Ù×÷£¨×ª£©

Java ¶¨ÒåµÄλÔËË㣨bitwise operators £©Ö±½Ó¶ÔÕûÊýÀàÐ͵Äλ½øÐвÙ×÷£¬ÕâЩÕûÊýÀàÐͰüÀ¨long£¬int£¬short£¬char£¬and byte ¡£±í4-2 ÁгöÁËλÔËË㣺
±í4.2 λÔËËã·û¼°Æä½á¹û
ÔËËã·û ½á¹û
~ °´Î»·Ç£¨NOT£©£¨Ò»ÔªÔËË㣩
& °´Î»Ó루AND£©
| °´Î»»ò£¨OR£©
^ °´Î»Òì»ò£¨XOR£©
>> ÓÒÒÆ
>>> ÓÒÒ ......

JAVA³õʼ»¯Ë³Ðò


Java³õʼ»¯Ë³Ðò
ÏÈ¿´Ò»¸öÀý×Ó£º
/**ÀàA**/ 
class TestA {  
    public TestA(String a){  
        System.out.println(a);  
    }  
}  
/**ÀàB**/ 
 class Te ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ