JDK婧愮爜鍒嗘瀽鍒濇鏁寸悊

Posted 2021-04-05 WriteOnRead

1. 鍟板棪涓€涓?/span>

涓嶇煡涓嶈涓€骞村張鍒颁簡灏惧０锛屼粠骞村垵寮€濮嬪啓 銆孞DK 婧愮爜鍒嗘瀽銆嶈繖涓郴鍒楋紝鑰屼粖宸茬粡杩囦簡澶у崐骞达紝鏂囩珷涔熷啓浜嗗嚑鍗佺瘒锛岃櫧璇翠笉澶氫絾涔熶笉绠楀お灏戯紙濂藉儚杩樻槸鏈夌偣灏戰煠ｏ級锛屼负渚夸簬鏌ョ湅锛岃繖閲岀畝鍗曞仛涓眹鎬诲拰鍒嗙被銆?/p>

2. JDK 婧愮爜绯诲垪鍒濇姹囨€?/span>

2.1 甯哥敤闆嗗悎绫?/span>

List銆丮ap 绛夐泦鍚堢被锛屽湪骞虫椂鐨勫紑鍙戝伐浣滀腑浣跨敤鐨勯鐜囩浉褰撻珮锛屽洜姝ゆ簮鐮佸垎鏋愪篃鏄厛浠庤繖閲屽紑濮嬬殑锛屼富瑕佸寘鎷互涓嬮儴鍒嗭細

PS: 杩欓噷娌℃湁鍒嗘瀽 HashSet銆乀reeSet 绛夛紝鍥犱负瀹冧滑鏄熀浜庡搴?Map 瀹炵幇鐨勶紝鎵€浠ョ暐杩囥€?/p>

2.2 AQS&閿?/span>

JDK 1.5 寮€濮嬶紝骞跺彂鍖?java.util.concurrent 涓嬪鍔犱簡涓嶅皯骞跺彂鎿嶄綔鐩稿叧鐨勭被锛岃繖閲屾殏涓斿垎鏋愪簡鍏朵腑涓€閮ㄥ垎锛?/p>

2.3 闃诲闃熷垪&绾跨▼姹?/span>

绾跨▼姹犲拰闃诲闃熷垪涔熸槸骞跺彂涓殑涓€涓牳蹇冪偣锛屼竴浜涘父鐢ㄧ被锛堟帴鍙ｏ級濡備笅锛?/p>

姝ゅ锛岃繕鏈夊苟鍙戝鍣ㄧ被锛?/p>

褰撶劧锛岃繖鍙槸涔濈墰涓€姣涳紝杩樻湁寰堝甯哥敤鐨勭被灏氭湭鍒嗘瀽鍒帮紝姣斿骞跺彂瀹瑰櫒 ConcurrentHashMap锛屼竴浜涘父鐢ㄧ殑绫诲 Object銆丼tring銆丼tringBuilder銆丼tringBuffer 绛夌瓑銆?/p>

姝ゅ锛屼互鍚庤繕璁″垝鍒嗘瀽涓€浜涘父鐢ㄧ殑妗嗘灦婧愮爜锛圫pring 绛夛級锛屼互鍙婂叾浠栫浉鍏崇煡璇嗭紙mysql 绛夛級锛屾暚璇锋湡寰?/span>銆?/p>

3. 灏忔劅

浠ュ墠涔熻杩囦竴閮ㄥ垎婧愮爜锛屼絾娌℃€庝箞鏁寸悊鍜屽仛绗旇锛屾湁浜涗笢瑗跨悊瑙ｇ殑涓嶅娣卞埢锛岃繃娈垫椂闂村氨蹇樹簡銆傝繖澶у崐骞磋涓嬫潵锛屽涔嬪墠鐨勮璇嗗拰鐞嗚В鍙堝姞娣变簡涓嶅皯锛屼互鍚庤繕浼氱户缁笅鍘汇€?/p>

杩欓噷涔熺畝鍗曞垎浜竴鐐瑰績寰楋紙绾睘涓汉鎰氳锛屼粎渚涘弬鑰冿級锛?/p>

1. 鑰愬績

   璇绘簮鐮佷竴瀹氳闈欎笅蹇冩潵銆佽€愬緱浣忔€у瓙锛屾湁浜涘湴鏂瑰彲鑳芥瘮杈冪粫锛屾垨鑰呮瘮杈冭垂瑙ｏ紝鎬ヨ簛涓嶅緱锛?/p>

2. 浠庡父鐢ㄧ被寮€濮嬶紝浠庢帴鍙ｅ紑濮?/p>

   甯哥敤绫荤湅璧锋潵姣旇緝"鑴哥啛"锛岃€屼笖鐞嗚В浜嗗畠浠殑鍘熺悊鑳藉湪寮€鍙戜腑鏇撮珮鏁堝湴浣跨敤锛?/p>

   浠庢帴鍙ｅ紑濮嬶紝鏄敱浜庢帴鍙ｅ叾瀹炵浉褰撲簬绫荤殑"瀹炵幇鏍囧噯"銆傚洜姝よ浜嗕竴涓帴鍙ｇ殑璇存槑鍜屽畠鐨勬柟娉曞畾涔変箣鍚庯紝灏辫兘浜嗚В瀹冪殑瀹炵幇绫荤殑涓昏鍔熻兘锛岃€屼笖鎺ュ彛瀹氫箟涓€鑸病浠€涔堜唬鐮侊紝鏇村鏄撶悊瑙ｅ叾瀹炵幇鎬濇兂锛岃€岄潪鐩存帴闄峰叆浠ｇ爜鐨勭粏鑺傦紱

3. 鏌ラ槄鍚勭璧勬枡

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杩樻湁灏辨槸銆屽啓涓嬫潵銆嶅緢閲嶈銆傝鐨勮繃绋嬩腑缁忓父鑷互涓洪兘鎳備簡锛屼絾鍙兘鍙槸閿欒锛屽湪缁勭粐璇█鍜屽啓浣滅殑杩囩▼涓篃璁镐細鍙戠幇鏌愪簺鍦版柟鐞嗚В鍦板苟涓嶆繁鍒绘垨鑰呮湁璇€傞剻浜轰互涓猴紝褰撹兘澶熺敤寰堥€氫織鏄撴噦鐨勮瘽璁╁埆浜虹悊瑙ｏ紝鎵嶇畻鐪熸噦浜嗗惂锛屾垜涔熷敖閲忓線杩欎釜鏂瑰悜鍔姏銆?/p>

PS: 鐢变簬鏈叕鍙锋病鏈夌暀瑷€鍔熻兘锛屽洜姝や篃涓嶆竻妤氬ぇ瀹惰杩囨鍓嶇殑鏂囩珷鏈夋€庢牱鐨勬劅鍙楀強璇勪环銆傚鏋滆寰楀灏戞湁浜涙敹鑾枫€佹病鏈夌櫧璇伙紝鍙互鍦ㄦ枃鏈彸涓嬭鐐逛笅"鍦ㄧ湅"锛屼篃绠楁槸涓€绉嶈禐鍚屽拰榧撳姳銆?/p>

褰撶劧锛岀敱浜庢湰浜烘按骞虫湁闄愶紝鍙兘鏈変簺鍦版柟鐞嗚В鏈夎锛屼篃璇峰ぇ瀹朵笉鍚濊祼鏁欙紝鍙互鍦ㄥ悗鍙扮淇℃寚姝ｏ紝涓嶈儨鎰熸縺銆?/p>