Java程序設(shè)計 9章_ppt.txt

1、絎節(jié)绔?澶氱嚎紼?瀛︿範(fàn)鐩殑錛?鎺屾彙澶氱嚎紼嬬殑鍩虹鐭ヨ瘑?鎺屾彙綰跨▼鐨勭敓鍛藉懆鏈?浜嗚В綰跨▼鐨勪紭鍏堢駭浜嗚В鐢ㄧ嚎紼嬪埗浣滃姩鐢葷殑鏂規(guī)硶瀛︿範(fàn)閲嶇偣錛?澶氱嚎紼嬬殑鍩虹鐭ヨ瘑?綰跨▼鐨勭敓鍛藉懆鏈?絎節(jié)绔?澶氱嚎紼?鏈珷鎻愯?錛?澶氱嚎紼嬬紪紼嬪熀紜€綰跨▼鐨勫熀鏈?蹇點€佺嚎紼嬫ā鍨嬨€乀hread綾匯€丷unnable鎺ュ彛銆佺嚎紼嬮棿鐨勬暟鎹叡浜€佸?綰跨▼鐨勫悓姝ユ帶鍒朵笌閫氫俊鍜屽畧鎶ょ嚎紼?2.綰

2、跨▼鐨勭敓鍛藉懆鏈?綰跨▼鐨勫嚑縐嶅熀鏈姸鎬併€佹閿侀棶棰樺拰鎺у埗綰跨▼鐨勭敓鍛?3.綰跨▼鐨勪紭鍏堢駭4.鐢ㄤ簬鍒朵綔鍔ㄧ敾鐨勭嚎紼?鍔ㄧ敾紼嬪簭妗嗘灦銆佸撫鐨勭敾娉曘€侀伩鍏嶉棯鍔ㄤ笌浣跨敤鍥劇墖9.1澶氱嚎紼嬬紪紼嬪熀紜€Java涓庣幇鍦ㄦ祦琛岀殑閫氱敤鐩殑緙栫▼璇█鐩告瘮鏈変釜鐙壒涔嬪?錛屽畠浣跨敤紼嬪簭鍛樺彲浠ヤ嬌鐢ㄧ殑騫跺彂鍘熻銆傜▼搴忓憳鎸囧畾鍦ㄧ▼搴忎腑鍖呭惈瑕佹墽琛岀殑澶氫釜綰跨▼錛屾瘡涓嚎紼嬭璁℃垚紼嬪

3、簭鐨勪竴閮ㄥ垎錛屽茍涓旇兘涓庡叾浠栫嚎紼嬪茍鍙戞墽琛岋紝榪欑?鍔熻兘縐頒負澶氱嚎紼嬨€?搴旂敤紼嬪簭瀛樺偍鍦ㄨ綆楁満緋葷粺鐨勫瓨鍌ㄧ┖闂翠腑鐨勪竴孌甸潤鎬佺殑浠ｇ爜搴忓垪榪涚▼澶勫湪鍙墽琛岀姸鎬佷腑鐨勫簲鐢ㄧ▼搴忕О涓鴻繘紼嬨€備粠鐢ㄦ埛瑙掑害鏉ョ湅錛岃繘紼嬫槸搴旂敤紼嬪簭鐨勪竴涓墽琛岃繃紼嬨€備粠鎿嶄綔緋葷粺鏍稿績瑙掑害鏉ョ湅錛岃繘紼嬩唬琛ㄧ殑鏄搷浣滅郴緇熷垎閰嶇殑鍐呭瓨銆丆PU鏃墮棿鐗囩瓑璧勬簮鐨勫熀鏈崟浣嶏紝鏄負姝ｅ湪

4、榪愯?鐨勭▼搴忔彁渚涚殑榪愯鐜銆???綰跨▼Java璇█涓畾涔夌殑綰跨▼錛圱hread錛夊寘鎷竴涓唴瀛樺叆鍙ｇ偣鍦板潃銆佷竴涓嚭鍙ｇ偣鍦板潃浠ュ強鑳藉欏哄簭鎵?ц?鐨勪唬鐮佸簭鍒椼€備絾綰跨▼涓嶈兘澶熷崟鐙墽琛岋紝瀹冨繀欏昏繍琛屽湪澶勪簬媧誨姩鐘舵€佺殑搴旂敤紼嬪簭榪涚▼涓紝鍥犳鍙互瀹氫箟綰跨▼鏄▼搴忓唴閮ㄧ殑鍏鋒湁騫跺彂鎬х殑欏哄簭浠ｇ爜嫻併€?9.1.1綰跨▼鐨勫熀鏈?蹇?澶氱嚎紼嬫ā鍨嬬殑鍚屾鏂瑰紡銆?

5、鎵€鏈夌殑瀵硅薄閮芥湁鍏呭綋浜掓枼閿佺殑鍐呯疆渚﹀惉鍣ㄣ€傚湪緇欏畾鐨勬椂鍒伙紝浠諱綍渚﹀惉鍣ㄥ彧鑳界敱涓€涓嚎紼嬫嫢鏈夈€傞€氳繃浣跨敤synchronized鍏抽敭瀛楀鏂規(guī)硶榪涜?淇グ錛屽彲浠ュ惎鐢ㄩ攣瀹氱壒鎬с€傚湪璋冪敤鍚屾鏂規(guī)硶鏃訛紝璇ュ璞″氨琚攣瀹氾紝鑰岃瘯鍥捐闂瀵硅薄鐨勫叾浠栫嚎紼嬪氨鍙兘絳夊緟銆?Java瀵瑰悓姝ョ殑鏀寔鍙互閫氳繃wait()銆乶otify()鍜宯otifyAll()鏂規(guī)硶鏉ュ疄

6、鐜般€?綰跨▼綾伙紙Thread錛?綰跨▼綾誨皝瑁呬簡鎵€鏈夐渶瑕佺殑綰跨▼鎿嶄綔鎺у埗銆傚繀欏誨緢娓呮鍦板尯鍒嗙嚎紼嬪?璞″拰榪愯綰跨▼錛岀嚎紼嬪璞″彲浠ョ湅浣滄槸榪愯綰跨▼鐨勬帶鍒墮潰鏉褲€傜嚎紼嬬被鏄帶鍒??剁嚎紼嬭涓虹殑鎯熶竴鎵嬫銆備竴涓狫?ava紼嬪簭鍚姩鍚庯紝灝卞凡緇忔湁涓€涓嚎紼嬪湪榪愯?銆傚彲浠ラ€氳繃璋冪敤Thread.currentThread()鏂規(guī)硶鏉ユ煡鐪嬪綋鍓嶈繍琛岀殑鏄摢涓€涓嚎紼?渚?19

7、.1.2Java鐨勭嚎紼嬫ā鍨?Thread綾葷殑鏋勯€犲嚱鏁幫細PublicThread(StringthreadName)錛氱敤浜庢瀯閫犱竴涓悕涓簍hreadName鐨凾hread瀵硅薄publicThread()錛氬垯鐢ㄤ簬鏋勯€犲悕涓衡€淭hread鈥濆姞涓婁竴涓暟瀛楃殑綰跨▼錛屽?鈥淭綰跨▼閮藉繀欏葷瓑寰呫€傜洿鍒拌綰跨▼鐢╳ait()鏂規(guī)硶鏀懼純榪欐妸閽ュ寵錛屽叾浠栫瓑寰呯殑綰跨▼鎶㈠崰璇ラ挜鍖欙紝鎶㈠崰鍒伴挜鍖欑殑綰

8、跨▼鎵嶅彲寰椾互鎵ц?錛岃€屾病鏈夊彇寰楅挜鍖欑殑綰跨▼浠嶈闃誨錛屽繀欏葷戶緇瓑寰呫€???渚?39.1.6澶氱嚎紼嬬殑鍚屾鎺у埗鐢ㄤ簬鍦ㄤ笉鍚岀嚎紼嬶紙threads錛夐棿榪涜閫氫俊閲囩敤鏄殑綆￠亾嫻併€傜閬撴祦鏄?竴縐嶇壒孌婄殑嫻併€備竴涓嚎紼嬪彂閫佹暟鎹埌杈撳嚭綆￠亾錛屽彟涓€涓嚎紼嬩粠杈撳叆綆￠亾涓鏁版嵁銆?綆￠亾鐨勫垱寤轟笌浣跨敤Pipedinputstream浠ｈ〃浜嗘暟鎹湪綆￠亾涓殑杈撳嚭绔紝涔熷氨鏄嚎

9、紼嬪悜綆￠亾璇繪暟鎹殑涓€绔紱pipeoutputstream浠ｈ〃浜嗘暟鎹湪綆￠亾涓殑杈撳叆绔紝涔熷氨鏄嚎紼嬪悜綆￠亾鍐欐暟鎹殑涓€绔紝榪欎袱涓被涓€璧蜂嬌鐢ㄥ彲浠ユ彁渚涙暟鎹殑綆￠亾嫻併€傝?鍒涘緩涓€涓閬撴祦錛屽繀欏誨厛鍒涘緩涓€涓猵ipeoutstream瀵硅薄錛岀劧鍚庯紝鍒涘緩pipeinputstream瀵硅薄錛屽涓嬶細?銆€銆€pipeout=newpipedyoutstream()銆€銆€

10、pipein=newpipedputsteam(pipepout)瀹炵幇綰跨▼闂寸殑閫氫俊渚?4ythreadzthread9.1.7綰跨▼涔嬮棿鐨勭殑閫氫俊瀹堟姢綰跨▼鏄負鍏朵粬綰跨▼鐨勮繍琛屾彁渚涙湇鍔＄殑綰跨▼銆備竴鑸湪鍚庡彴榪愯?銆傚瀮鍦懼洖鏀跺櫒灝辨槸涓€涓畧鎶ょ嚎紼嬨€?闈炲畧鎶ょ嚎紼嬩竴鑸槸鐢ㄦ埛綰跨▼鎴栫敤浜庡?鐞咷UI浜嬩歡鐨勪簨浠惰皟搴︾嚎紼嬨€?瀹堟姢綰跨▼鐨勫畾涔夛細setDaemon(true)濡傛灉鍙

11、傛暟涓篺alse錛屽垯璇ョ嚎紼嬩負闈炲畧鎶ょ嚎紼嬨€備竴涓▼搴忓彲浠ュ寘鎷畧鎶ょ嚎紼嬪拰闈炲畧鎶ょ嚎紼嬨€傚綋紼嬪簭涓彧鏈夊畧鎶ょ嚎紼嬫椂錛岀▼搴忎究緇撴潫榪愯?銆傚?鏋滆?浣夸竴涓嚎紼嬩負瀹堟姢綰跨▼錛屽繀欏誨湪璋冪敤鍏秙tart鏂規(guī)硶涔嬪墠榪涜浠ヤ笂璁劇疆錛屽惁鍒?欎細浜х敓IllegalThreadStateException寮傚父銆傚鏋滅嚎紼嬫槸瀹堟姢綰跨▼錛屽垯?isDaemon鏂規(guī)硶榪斿洖true錛屽惁鍒欒繑鍥瀎al

12、se銆?9.1.8瀹堟姢綰跨▼9.2綰跨▼鐨勭敓鍛藉懆鏈?浠諱綍涓€涓嚎紼嬮兘鏈夎嚜宸辯殑鐢熷懡鍛ㄦ湡錛屽叾涓寘鎷垱寤恒€佸彲榪愯?銆佽繍琛屼腑銆佺瓑寰呫€佷紤鐪犮€侀樆濉炲拰姝諱骸7縐嶇姸鎬併€傚湪綰跨▼鐨勭敓鍛藉懆鏈熶腑錛屼換浣曚竴涓嚎紼嬮兘鏄?浜庤繖涓冪?鐘舵€佷腑鐨勬煇涓€縐嶇姸鎬侊紝鍏剁姸鎬佸茍闅忕▼搴忕殑鎵ц?鍦ㄤ笉鏂殑鍙樺寲銆?9.2.1綰跨▼鐨勫嚑縐嶅熀鏈姸鎬?9.2.1綰跨▼鐨勫嚑縐嶅熀鏈姸鎬?鍒涘緩鐘

13、舵€侊細浣跨敤new榪愮畻絎﹀垱寤轟竴涓嚎紼嬪悗錛岃綰跨▼浠呬粎鏄竴涓┖瀵硅薄錛岀郴緇熸病鏈夊垎閰嶈祫婧愶紝縐拌綰跨▼澶勪簬鍒涘緩鐘舵€併€傚湪璋冪敤綰跨▼鐨剆tart鏂規(guī)硶涔嬪墠錛岃綰跨▼灝嗕竴鐩村?浜庡垱寤虹姸鎬侊紙newthread錛夈€?鍙繍琛岀姸鎬侊細浣跨敤start()鏂規(guī)硶鍚姩涓€涓嚎紼嬪悗錛岀郴緇熶負璇ョ嚎紼嬪垎閰嶄簡闄?PU澶栫殑鎵€闇€璧勬簮錛屼嬌璇ョ嚎紼嬪浜庡彲榪愯鐘舵€侊紙??Runnable錛

14、夈€?榪愯涓姸鎬侊細?Java榪愯緋葷粺閫氳繃璋冨害閫変腑涓€涓彲榪愯鐨勭嚎紼嬶紝浣垮叾鍗犳湁??CPU騫惰漿涓鴻繍琛屼腑鐘舵€侊紙Running錛夈€傛鏃訛紝澶勪簬鍙繍琛岀姸鎬佺殑鏈€楂樹紭鍏堢駭綰跨▼渚胯繘鍏ヤ簡榪愯鐘舵€侊紝緋葷粺鐪熸鎵?ц?綰跨▼鐨剅un()鏂規(guī)硶錛屽嵆綰跨▼寮€濮嬫墽琛屻€?姝諱骸鐘舵€侊細濡傛灉綰跨▼鐨剅un鏂規(guī)硶緇撴潫鎴栫敱浜庡叾浠栧師鍥犵粓姝紝鍒欒綰跨▼渚胯繘?鍏ヤ簡姝諱骸鐘舵€侊紱緋葷粺鏈€

15、緇堜細鎶涘嚭姝諱骸鐨勭嚎紼嬨€?闃誨鐘舵€侊細濡傛灉澶勪簬榪愯鐘舵€佺殑綰跨▼鍙戝嚭杈撳叆??杈撳嚭璇鋒眰錛屽畠渚胯繘鍏ラ樆濉炵姸鎬併€傚綋鍏剁瓑寰呯殑IO鎿嶄綔緇撴潫鏃訛紝闃誨鐨勭嚎紼嬩究鍥炲埌鍙繍琛岀姸鎬併€傚浜?庨樆濉炵殑綰跨▼鏉ヨ錛屽嵆浣垮?鐞嗗櫒絀洪棽錛屽畠涔熶笉鑳戒嬌鐢ㄣ€?浼戠湢鐘舵€侊細褰撶▼搴忚皟鐢ㄤ竴涓鍦ㄨ繍琛岀殑綰跨▼鐨剆leep鏂規(guī)硶鏃訛紝璇ョ嚎紼嬩究浼氳繘鍏ヤ紤鐪犵姸鎬併€傝繘鍏ヤ紤鐪犵殑綰跨▼鍦ㄥ叾