ï»??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲综合精品四区,成人爽a毛片一区二区免费,精品日韩在线一区 http://www.aygfsteel.com/Cboy/zh-cn Fri, 20 Jun 2025 04:43:16 GMT Fri, 20 Jun 2025 04:43:16 GMT 60 jbuilder䏿–‡æœ‰æ•ˆè§£å†³æ–ÒŽ(gu¨©)¡ˆ http://www.aygfsteel.com/Cboy/archive/2006/02/12/30357.html大森æž?/dc:creator>大森æž?/author>Sun, 12 Feb 2006 08:05:00 GMT http://www.aygfsteel.com/Cboy/archive/2006/02/12/30357.html http://www.aygfsteel.com/Cboy/comments/30357.html http://www.aygfsteel.com/Cboy/archive/2006/02/12/30357.html#Feedback 0 http://www.aygfsteel.com/Cboy/comments/commentRss/30357.html http://www.aygfsteel.com/Cboy/services/trackbacks/30357.html ]]> é›†åˆ http://www.aygfsteel.com/Cboy/archive/2005/12/30/25974.html大森æž?/dc:creator>大森æž?/author>Thu, 29 Dec 2005 19:33:00 GMT http://www.aygfsteel.com/Cboy/archive/2005/12/30/25974.html http://www.aygfsteel.com/Cboy/comments/25974.html http://www.aygfsteel.com/Cboy/archive/2005/12/30/25974.html#Feedback 0 http://www.aygfsteel.com/Cboy/comments/commentRss/25974.html http://www.aygfsteel.com/Cboy/services/trackbacks/25974.html
Vector 和Enumeration 一�br>
�br>
Vector v = new Vector();
Enumeration e = v.elements();
e.nextElement æŒ‡ç¤ºå™¨æ£æŒ‡å‘çš„å…ƒç´ å¯¹è±?br>
e.hasMoreElements 回是å¦è¿˜æœ‰å…ƒç´?br>
List 和Iterator 一�br>
�br>
ArrayList al = new ArrayList();
Iterator it = al.iterator();
it.next();
it.hasNext();
é™„åŠ ä¸€å¥ï¼š(x¨¬)排åºä½¿ç”¨Collections çš„ä¸€ä¸ªé™æ€æ–¹æ³?Collections.sort(集åˆå¯¹è±¡);
]]> instanceof比较 http://www.aygfsteel.com/Cboy/archive/2005/12/30/25973.html大森�/dc:creator>大森�/author>Thu, 29 Dec 2005 19:20:00 GMT http://www.aygfsteel.com/Cboy/archive/2005/12/30/25973.html http://www.aygfsteel.com/Cboy/comments/25973.html http://www.aygfsteel.com/Cboy/archive/2005/12/30/25973.html#Feedback 0 http://www.aygfsteel.com/Cboy/comments/commentRss/25973.html http://www.aygfsteel.com/Cboy/services/trackbacks/25973.html
�br>
class A{}
class B extendsA{}
public class Test
{
public static void main(String args[])
{
B b= new B();
biJiao(b);
}
}
有一æ–ÒŽ(gu¨©)³•
biJiao(object obj)
{
if (ojb instanceof A )
{
System.out.println("˜q™é‡Œä¼?x¨¬)显½CºTrue");
}
}
˜q™æ ·ä¸èƒ½æ˜„¡¤ºå”¯ä¸€çš?è¦æ˜¾½Cºå”¯ä¸€çš„用 Class æ–ÒŽ(gu¨©)³•.æ¯ä¸ª¾c»éƒ½ä¼?x¨¬)有一个唯一的Class.如这里改æˆ?br>
biJiao(object obj)
{
if (ojb.getClass==A.Class() )
{
System.out.println("˜q™é‡Œä¼?x¨¬)显½CºFalse");
}
}
]]>
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