javaÖÐmap¼¯ºÏµÄÓ÷¨
http://blog.csdn.net/ycyangcai/archive/2009/06/21/4285997.aspx
1.ÉùÃ÷Ò»¸ömap: Map map = new HashMap();
2.ÏòmapÖзÅÖµ,×¢Ò⣺mapÊÇkey-valueµÄÐÎʽ´æ·ÅµÄ.Èç:
map.put("sa","dd");
3.´ÓmapÖÐÈ¡Öµ:String str = map.get("sa").toString();½á¹ûÊÇ:str = "dd";
4.±éÀúÒ»¸ömap£¬´ÓÖÐÈ¡µÃkey ºÍvalue
JDK1.5
view plaincopy to clipboardprint?
Map m = new HashMap();
for (Object o : map.keySet()) {
map.get(o);
}
JDK1.4
view plaincopy to clipboardprint?
Map map = new HashMap() ;
Iterator it = map.entrySet().iterator() ;
while (it.hasNext())
{
Map.Entry entry = (Map.Entry) it.next() ;
Object key = entry.getKey() ;
Object value = entry.getValue() ;
}
Ïà¹ØÎĵµ£º
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
......
Ò»¡¢»ùÓÚRMIµÄÒ»´ÎÍêÕûµÄÔ¶³ÌͨÐŹý³ÌµÄÔÀí£º
1. ¿Í»§¶Ë·¢ÆðÇëÇó£¬ÇëÇóת½»ÖÁRMI¿Í»§¶ËµÄstubÀࣻ
2. stubÀཫÇëÇóµÄ½Ó¿Ú¡¢·½·¨¡¢²ÎÊýµÈÐÅÏ¢½øÐÐÐòÁл¯£»
3. »ùÓÚsocket½«ÐòÁл¯ºóµÄÁ÷´«ÊäÖÁ·þÎñÆ÷¶Ë£»
4. ·þÎñÆ÷¶Ë½ÓÊÕµ½Á÷ºóת·¢ÖÁÏàÓ¦µÄskeltonÀࣻ
5. skeltonÀཫÇëÇóµÄÐÅÏ¢·´ÐòÁл¯ºóµ÷ÓÃʵ¼ÊµÄ´¦ÀíÀࣻ
6. ´¦Àí ......
ºÜ¶àÅóÓÑÔÚÉîÈëµÄ½Ó´¥ JAVA ÓïÑÔºó¾Í»á·¢ÏÖÕâÑùÁ½¸ö´Ê£º·´Éä (Reflection) ºÍÄÚÊ¡ (Introspector) £¬¾³£¸ã²»Çå³þÕâµ½µ×ÊÇÔõô»ØÊ£¬ÔÚʲô³¡ºÏÏÂÓ¦ÓÃÒÔ¼°ÈçºÎʹÓ㿽ñÌì°ÑÕâ¶þÕß·ÅÔÚÒ»Æð½éÉÜ£¬ÒòΪËüÃǶþÕßÊÇÏศÏà³ÉµÄ¡£
·´Éä
<o:p> </o:p>
Ïà¶Ô¶øÑÔ£¬·´Éä±ÈÄÚÊ¡¸üÈÝÒ×Àí½âÒ»µã¡£ÓÃÒ»¾ä±È½Ï°×µÄ»°À´¸ÅÀ ......
1. Java±£´æµÄÎļþÃû±ØÐëÓëÀàÃûÒ»Ö£»
2. Èç¹ûÎļþÖÐÖ»ÓÐÒ»¸öÀ࣬ÎļþÃû±ØÐëÓëÀàÃûÒ»Ö£»
3. Ò»¸öJavaÎļþÖÐÖ»ÄÜÓÐÒ»¸öpublicÀࣻ
4. Èç¹ûÎļþÖв»Ö¹Ò»¸öÀ࣬Îļþ ......
synchronized¹Ø¼ü×ÖÔÚ¶àÏß³ÌÖеÄ×÷Óãº
Á½ÖÖÓ÷¨£ºsynchronized ·½·¨ºÍ synchronized ¿é¡£
1. synchronized ·½·¨£ºÍ¨¹ýÔÚ·½·¨ÉùÃ÷ÖмÓÈë synchronized¹Ø¼ü×ÖÀ´ÉùÃ÷ synchronized ·½·¨¡£ÈçÉÏÊöÀý×ÓËùÊö¡£
synchronized ·½·¨¿ØÖƶÔÀà³ÉÔ±±äÁ¿µÄ·ÃÎÊ£ºÃ¿¸öÀàʵÀý¶ÔÏó¶ÔÓ¦Ò»°ÑËø£¬Ã¿¸ö synchronized ·½·¨¶¼±ØÐë»ñµÃµ÷Óø÷½· ......