1 package com.test.singleton;
2
3 /**
4 * @author mr.cheng
5 *
6 */
7 public class Singleton {
8 //榪愮敤private縐佹湁鍖栨瀯閫犲櫒,鍏朵粬綾諱笉鑳介氳繃new鑾峰彇鏈璞?/span>
9 private Singleton() {
10 }
11 //榪愮敤縐佹湁闈欐乮nstance淇濆瓨鏈璞?蹇呴』鏄潤鎬佸彉閲?鍥犱負(fù)浼?xì)鍦╣etInstance鏂規(guī)硶涓繍鐢?/span>
12 private static Singleton instance;
13 //闈欐佹柟娉曟槸鍥犱負(fù)涓嶈兘閫氳繃new鏉ヨ幏鍙栧璞?鍙兘閫氳繃榪欎釜闈欐佹柟娉曟潵鑾峰彇瀵硅薄瀹炰緥
14 static synchronized Singleton getInstance(){
15 //鍏堝垽鏂繚瀛樺疄渚嬬殑鍙橀噺instance鏄惁涓虹┖錛屼負(fù)絀哄垯鏂板緩瀹炰緥錛屽茍淇濆瓨鍒癷nstance涓?/span>
16 if(instance == null){
17 //Singleton鍙湁涓涓瀯閫犲櫒,騫跺０鏄庝負(fù)private,鍥犳鍙兘鍦ㄥ唴閮ㄨ皟鐢╪ew 鑾峰彇瀹炰緥
18 instance = new Singleton();
19 return instance;
20 } else{
21 return instance;
22 }
23 }
24 }
25
2
3 /**
4 * @author mr.cheng
5 *
6 */
7 public class Singleton {
8 //榪愮敤private縐佹湁鍖栨瀯閫犲櫒,鍏朵粬綾諱笉鑳介氳繃new鑾峰彇鏈璞?/span>
9 private Singleton() {
10 }
11 //榪愮敤縐佹湁闈欐乮nstance淇濆瓨鏈璞?蹇呴』鏄潤鎬佸彉閲?鍥犱負(fù)浼?xì)鍦╣etInstance鏂規(guī)硶涓繍鐢?/span>
12 private static Singleton instance;
13 //闈欐佹柟娉曟槸鍥犱負(fù)涓嶈兘閫氳繃new鏉ヨ幏鍙栧璞?鍙兘閫氳繃榪欎釜闈欐佹柟娉曟潵鑾峰彇瀵硅薄瀹炰緥
14 static synchronized Singleton getInstance(){
15 //鍏堝垽鏂繚瀛樺疄渚嬬殑鍙橀噺instance鏄惁涓虹┖錛屼負(fù)絀哄垯鏂板緩瀹炰緥錛屽茍淇濆瓨鍒癷nstance涓?/span>
16 if(instance == null){
17 //Singleton鍙湁涓涓瀯閫犲櫒,騫跺０鏄庝負(fù)private,鍥犳鍙兘鍦ㄥ唴閮ㄨ皟鐢╪ew 鑾峰彇瀹炰緥
18 instance = new Singleton();
19 return instance;
20 } else{
21 return instance;
22 }
23 }
24 }
25
鍗曞垪妯″紡涓昏榪愮敤鍦烘櫙錛氬疄渚嬪寲鏃惰楃敤鐨勮祫婧愭瘮杈冨ぇ錛屾垨鑰呭璞″疄渚嬫瘮杈冮綣侊紝浠ュ強(qiáng)瑕佷繚璇佸湪鏁翠釜紼嬪簭涓紝鍙湁涓涓疄渚嬨? 渚嬪鏁版嵁婧愰厤緗紝緋葷粺鍙傛暟閰嶇疆絳夈?
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濮嬬粓鑷繁閮戒笉鏄鐝嚭韜紝鏈夊緢澶氱殑鍩虹閮戒笉浼?xì)銆傝嚜宸辨椿鍦ㄨ嚜宸辯殑涓栫晫錛屽綋鐒朵笉浼?xì)鍙戣鑷忿q殑娓哄皬銆備絾褰撳仠涓嬫潵錛岀幆瑙嗗洓鍛ㄧ殑鏃跺欙紝灝卞彂瑙夎韓杈圭殑浜洪兘寰堝姫鍔涳紝澶у閮戒笉鏂姫鍔涘湴鍚戜笂銆?/p>
韜竟鏈変簺鏈嬪弸閮借鎴戠幇鍦ㄦ棩瀛愯繃寰楄繕濂斤紝涓嶈鏈夊お澶氭ㄨ█錛屼笉榪囨垜濮嬬粓甯屾湜鑷繁涓嶆槸騫沖焊鐨勩傛垜鍠滄鍗撹秺鐨勪笢瑗匡紝鎴戝枩嬈㈣嚜宸辨洿鏈変環(huán)鍊鹼紝鎴戝姫鍔涘笇鏈涘彲浠ヨ劚紱葷幇鍦紝榪涘叆涓涓柊鐨勪笘鐣屻?/p>
鍋氫簡鍑犲崄騫翠漢錛屾昏寰楄嚜宸卞緢澶氭椂鍊欓兘鏄緢闅忎究錛屽緢闅忔剰鍦扮敓媧伙紝榪欐牱錛岀湡鐨勪笉濂姐?/p>
涓嶆兂嫻垂鏃跺厜錛屽笇鏈涜嚜宸辯殑鍔姏閮芥晥鏋溿傛瘡澶╅兘鐪嬩功錛岄兘甯屾湜榪涙錛屼絾鐜板湪榪樻槸娌℃湁鐘舵佸晩錛岀湅涔﹂兘鏄瘮杈冮殢鎰忥紝娌℃湁璁″垝銆?/p>
榪欐牱鐨勬晥鐜囧お浣庝簡錛屽簲璇ュ仛涓涓畬鏁寸殑璁″垝錛岀劧鍚庡啀瀹炵幇瀹冦?/p>
鍙樻垚鐗沊鍟婏紒錛佷笉鎯崇湅鐫鍏朵粬浜哄彉鎴愬ぇ鐗涳紝鑷繁涔熻鍙樻垚澶х墰鍟婏紒
鍙樻垚鐗沊鐨勮礬錛屽緢鏈夊緢闀垮晩錛屽姫鍔涳紝鍔姏!
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