瀵硅薄鏁扮粍錛氬彲浠ヤ繚瀛樺涓璞″湪涓涓暟緇勪腑
闂錛氭暟緇勭殑闀垮害鏄笉鍙敼鍙樼殑錛岃岀被闆嗙殑澶у皬涓嶇‘瀹氬彲浠ヤ換鎰忕殑鎵╁厖鎴栧噺灝?/font>
涓変釜鏍稿績鎺ュ彛
1銆?Collection---List(ArrayList,LinkedList)
---Set
List
鎿嶄綔錛歛dd()
List all=new ArrayList();
all.add("MLDN");
all.add("LXH");
榛樿鎯呭喌涓嬪姞鍏ユ暟鎹殑欏哄簭灝辨槸杈撳嚭鐨勯『搴?br />鍙互浣跨敤鐗瑰畾鐨勬柟娉曞悜鎸囧畾鐨勪綅緗鍔?br />浣跨敤綾婚泦鏃訛紝鍔犲叆鐨勫璞℃渶濂戒竴縐嶅璞?/font>
浠庡璞℃暟緇勪腑鍒犻櫎鏁版嵁鐢╮emove()
涓涓釜鎵撳嵃鍏冪礌鐨勬柟娉曪細
1銆佺敤for寰幆(size()鑾峰彇綾婚泦鐨勫ぇ灝忋乬et(int indenx)榪斿洖鎸囧畾浣嶇疆鐨勫厓绱?
2銆両terator (寮鍙戜腑闆嗗悎閮芥槸鐢ㄨ鎺ュ彛杈撳嚭)
鍥犱負闆嗗悎鐨勯暱搴︿笉鍥哄畾錛屾墍浠terator閲囩敤鐨勬柟娉曟槸涓涓釜鍒ゆ柇杈撳嚭錛?br /> 濡傛灉鏈変笅涓涓厓绱犲氨鎵ц錛屽鏋滄病鏈変笅涓涓厓绱犲氨涓嶆墽琛?br /> 鍒ゆ柇鏄惁鏈変笅涓涓厓绱狅細public boolean hasNext();
鍙栧唴瀹?public Object next()
Iterator iter=闆嗗悎瀵硅薄.iterator();
while(iter.hasNext()){
object obj = iter.next();
System.out.println(obj);
}
濡備綍璁╀竴涓泦鍚堝彧鍔犲叆涓縐嶅璞?br />List<java.lang.String>all = new ArrayList<java.lang.String>();
渚夸簬杞瀷
(Collection)闆嗗悎鎿嶄綔鐨勬柟娉曟葷粨錛?br />鍚戦泦鍚堜腑鍔犲叆鏁版嵁錛?br />浠庨泦鍚堜腑鍒犻櫎鏁版嵁錛?br />涓篒terator瀹炰緥鍖栵紱
鍙栧嚭鍏冪礌鐨勪釜鏁般?br />Set
鍖哄埆錛?HashSet 瀛愮被鍔犲叆鐨勫璞℃槸鏃犲簭鐨?(鏁ｅ垪瀛樻斁)
List 涓彲浠ュ瓨鏀鵑噸澶嶅厓绱狅紝 Set 涓笉鍏佽瀛樺湪閲嶅鍏冪礌
濡傛灉甯屾湜Set涓殑鏁版嵁鎸夐『搴?鏁版嵁鐨勫ぇ灝忎笉鏄斁鍏ユ暟鎹殑欏哄簭)瀛樻斁鍒欏簲璇ヤ嬌鐢═reeSet瀛愮被
闈犵殑鏄疌omparable()鎺ュ彛
2銆?Map
Map鐨勪富瑕佸姛鑳芥槸浣滀負鏌ユ壘浣跨敤鑰屼笉鏄綔涓鴻緭鍑轟嬌鐢?br />瀛樺彇鏁版嵁鐨勬柟娉曪細put(Object key,Object value)
鍙栧唴瀹癸細Object get(Object key)
Map<java.lang.String,java.lang.String> m = new HashMap<java.lang.String,java.lang.String>() ;
m.put("寮犱笁","123456") ;
m.put("鏉庡洓","654321") ;
System.out.println(m.get("璧靛叚")) ;//null
Map 鎺ュ彛鐨勫璞′笉鑳界洿鎺ヤ嬌鐢↖terator杈撳嚭
//涓嬮潰鐨勮繖涓柟娉曚簡瑙ｅ嵆鍙?br /> 濡傛灉闈炶浣跨敤Iterator杈撳嚭Map鎺ュ彛瀵硅薄鐨勫唴瀹癸紝鍒欏繀欏諱嬌鐢ㄤ互涓嬫楠?br />Map ——>Set ——> Iterator ——> Map.Entry ——> key銆乿alues
Set all = m.entrySet() ;
Iterator iter = all.iterator() ;
while(iter.hasNext()){
Map.Entry me = (Map.Entry)iter.next() ;
System.out.println(me.getKey()+" --> "+me.getValue()) ;
}
3銆?Iterator
4銆?Enumeration :鏋氫婦錛屼笌Iterator鐨勫姛鑳戒竴鑷達紝閮芥槸鐢ㄤ簬杈撳嚭闆嗗悎涓殑鍐呭
List 鍜?Set 閮戒笉鑳戒嬌鐢?Enumeration 杈撳嚭
鑰?List 鐨勫彟涓涓瓙綾伙細 Vector 鍙互浣跨敤Enumeration杈撳嚭
Vector 鏄竴涓悓姝ユ搷浣?鎬ц兘涓嶆槸寰堝ソ 鍥犳鍚庢潵璁?Vector 涔熷疄鐜頒簡 Iterator 鎺ュ彛
浣跨敤瀹炰緥錛?br />Vector v = new Vector() ;
v.add("A") ;
v.add("A") ;
v.add("A") ;
Enumeration e = v.elements() ;
while(e.hasMoreElements()){
System.out.println(e.nextElement()) ;
}
5銆?Stack (Vector 鐨勫瓙綾?(鍏堣繘鍚庡嚭)
Stack s = new Stack() ;
s.push("A") ;
s.push("B") ;
s.push("C") ;
s.push("D") ;
s.push("E") ;
// 鍙栧?br />while(!s.empty()){
System.out.println(s.pop()) ;
}
嫻忚鍣ㄧ殑鍓嶈繘鍜屽悗閫灝辨槸鐢ㄦ爤瀹炵幇鐨?/font>
6銆?Hashtable 涓?HashMap 鐩鎬技錛屼絾 Hashtable 鏄悓姝ョ殑
7銆?Properties 綾繪槸 Hashtable 鐨勫瓙綾?br /> 涓嶅悓涔嬪錛?Properties 綾諱富瑕佹槸淇濆瓨瀛楃涓茬殑錛岃?Hashtable 鏄繚瀛樺璞＄殑銆?br /> setProperties(String key,String value)
getProperties(String key)
8銆?ArrayList 涓?Vector
寮傛 | 鍚屾
鍙敮鎸?Iterator 杈撳嚭| 鏀寔 Iterator 鍜?Enumeration 杈撳嚭
鍑虹幇杈冩櫄 | 鍑虹幇杈冩棭
9銆?HashMap 涓?Hashtable
寮傛 | 鍚屾
涓嶇洿鎺ユ敮鎸両terator杈撳嚭| 涓嶇洿鎺ユ敮鎸両terator杈撳嚭
鍑虹幇杈冩櫄 | 鍑虹幇杈冩棭
10銆佹湰绔犻噸鐐?/font>
HashMap 涓?Hashtable
ArrayList 涓?Vector
Iterator 涓?Enumeration
淇濆瓨鍗曚釜鍊肩殑闆嗗悎:Collection:
|---List:鍏佽鏈夐噸澶嶅厓绱?br /> |---ArrayList:寮傛澶勭悊錛屾柊鐨勭被錛屽彧鑳界敤 Iterator 杈撳嚭
|---Vector:鍚屾澶勭悊錛屾棫鐨勭被錛岃兘 Iterator 鍜?Enumeration 杈撳嚭
|---Set:涓嶅厑璁告湁閲嶅鍏冪礌
|---HashSet:鏁ｅ垪錛屾棤搴?br /> |---TreeSet:鏈夊簭錛屾寜 Comparable 鎺掑簭
淇濆瓨涓瀵瑰肩殑闆嗗悎(Map):
|---HashMap:寮傛澶勭悊鏂扮殑綾?br /> |---Hashtable:鍚屾澶勭悊鏃х殑綾?br /> |---TreeMap:鎸塊EY榪涜鎺掑垪鐨勯泦鍚?br />杈撳嚭:
|---Iterator:鏂扮殑杈撳嚭綾伙紝鏂規硶鍚嶇О杈冪煭
|---Enumeration:鏃х殑杈撳嚭綾伙紝鏂規硶鍚嶇О杈冮暱
]]>