锘??xml version="1.0" encoding="utf-8" standalone="yes"?>
public class Test3 {
public static void main(String[] args) throws IOException {
final Test obj = new Test();
new Thread()
{
public void run()
{
obj.m1();
}
}.start();
new Thread()
{
public void run()
{
obj.m2();
}
}.start();
new Thread()
{
public void run()
{
obj.m3();
}
}.start();
}
}
class Test
{
static int count;
volatile int target = 1;
synchronized void m1()
{
for (int i = 0; i < 10; i++)
{
while (target == 2 || target == 3)
{
try {
wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
System.out.println("m1() =" + i);
target = 2;
notifyAll();
}
}
synchronized void m2()
{
for (int i = 0; i < 10; i++)
{
while (target == 1 || target == 3)
{
try {
wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
System.out.println("m2() =" + i);
target = 3;
notifyAll();
}
}
synchronized void m3()
{
for (int i = 0; i < 10; i++)
{
while (target == 1 || target == 2)
{
try {
wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
System.out.println("m3() =" + i);
target = 1;
notifyAll();
}
}
}
綰跨▼浠庡垱寤恒佽繍琛屽埌緇撴潫鎬繪槸澶勪簬涓嬮潰浜斾釜鐘舵佷箣涓錛氭柊寤虹姸鎬併佸氨緇姸鎬併佽繍琛岀姸鎬併侀樆濉炵姸鎬佸強姝諱骸鐘舵併?/p>
涓涓柊鍒涘緩鐨勭嚎紼嬪茍涓嶈嚜鍔ㄥ紑濮嬭繍琛岋紝瑕佹墽琛岀嚎紼嬶紝蹇呴』璋冪敤綰跨▼鐨?/span>start()鏂規(guī)硶銆傚綋綰跨▼瀵硅薄璋冪敤start()鏂規(guī)硶鍗沖惎鍔ㄤ簡綰跨▼錛?/span>start()鏂規(guī)硶鍒涘緩綰跨▼榪愯鐨勭郴緇熻祫婧愶紝騫惰皟搴︾嚎紼嬭繍琛?/span>run()鏂規(guī)硶銆傚綋start()鏂規(guī)硶榪斿洖鍚庯紝綰跨▼灝卞浜庡氨緇姸鎬併?/span> 澶勪簬灝辯華鐘舵佺殑綰跨▼騫朵笉涓瀹氱珛鍗寵繍琛?/span>run()鏂規(guī)硶錛岀嚎紼嬭繕蹇呴』鍚屽叾浠栫嚎紼嬬珵浜?/span>CPU鏃墮棿錛屽彧鏈夎幏寰?/span>CPU鏃墮棿鎵嶅彲浠ヨ繍琛岀嚎紼嬨傚洜涓哄湪鍗?/span>CPU鐨勮綆楁満緋葷粺涓紝涓嶅彲鑳藉悓鏃惰繍琛屽涓嚎紼嬶紝涓涓椂鍒諱粎鏈変竴涓嚎紼嬪浜庤繍琛岀姸鎬併傚洜姝ゆ鏃跺彲鑳芥湁澶氫釜綰跨▼澶勪簬灝辯華鐘舵併傚澶氫釜澶勪簬灝辯華鐘舵佺殑綰跨▼鏄敱Java榪愯鏃剁郴緇熺殑綰跨▼璋冨害紼嬪簭(thread scheduler)鏉ヨ皟搴︾殑銆?br /> 褰撶嚎紼嬭幏寰?/span>CPU鏃墮棿鍚庯紝瀹冩墠榪涘叆榪愯鐘舵侊紝鐪熸寮濮嬫墽琛?/span>run()鏂規(guī)硶. 綰跨▼榪愯榪囩▼涓紝鍙兘鐢變簬鍚勭鍘熷洜榪涘叆闃誨鐘舵? 鏈変袱涓師鍥犱細瀵艱嚧綰跨▼姝諱骸錛?br /> 1) run鏂規(guī)硶姝e父閫鍑鴻岃嚜鐒舵浜★紝 Java鐨勬瘡涓嚎紼嬮兘鏈変竴涓紭鍏堢駭錛屽綋鏈夊涓嚎紼嬪浜庡氨緇姸鎬佹椂錛岀嚎紼嬭皟搴︾▼搴忔牴鎹嚎紼嬬殑浼樺厛綰ц皟搴︾嚎紼嬭繍琛屻?/span> 鍙互鐢ㄤ笅闈㈡柟娉曡緗拰榪斿洖綰跨▼鐨勪紭鍏堢駭銆?/span> · public final void setPriority(int newPriority) 璁劇疆綰跨▼鐨勪紭鍏堢駭銆?/span> · public final int getPriority() 榪斿洖綰跨▼鐨勪紭鍏堢駭銆?/span> newPriority涓虹嚎紼嬬殑浼樺厛綰э紝鍏跺彇鍊間負1鍒?/span>10涔嬮棿鐨勬暣鏁幫紝涔熷彲浠ヤ嬌鐢?/span>Thread綾誨畾涔夌殑甯擱噺鏉ヨ緗嚎紼嬬殑浼樺厛綰э紝榪欎簺甯擱噺鍒嗗埆涓猴細Thread.MIN_PRIORITY銆?/span>Thread.NORM_PRIORITY銆?/span>Thread.MAX_PRIORITY錛屽畠浠垎鍒搴斾簬綰跨▼浼樺厛綰х殑1銆?/span>5鍜?/span>10錛屾暟鍊艱秺澶т紭鍏堢駭瓚婇珮銆傚綋鍒涘緩Java綰跨▼鏃訛紝濡傛灉娌℃湁鎸囧畾瀹冪殑浼樺厛綰э紝鍒欏畠浠庡垱寤鴻綰跨▼閭i噷緇ф壙浼樺厛綰с?/span> 涓鑸潵璇達紝鍙湁鍦ㄥ綋鍓嶇嚎紼嬪仠姝㈡垨鐢變簬鏌愮鍘熷洜琚樆濉烇紝杈冧綆浼樺厛綰х殑綰跨▼鎵嶆湁鏈轟細榪愯銆?/span> 鍓嶉潰璇磋繃澶氫釜綰跨▼鍙茍鍙戣繍琛岋紝鐒惰屽疄闄呬笂騫朵笉鎬繪槸榪欐牱銆傜敱浜庡緢澶氳綆楁満閮芥槸鍗?/span>CPU鐨勶紝鎵浠ヤ竴涓椂鍒誨彧鑳芥湁涓涓嚎紼嬭繍琛岋紝澶氫釜綰跨▼鐨勫茍鍙戣繍琛屽彧鏄夠瑙夈傚湪鍗?/span>CPU鏈哄櫒涓婂涓嚎紼嬬殑鎵ц鏄寜鐓ф煇縐嶉『搴忔墽琛岀殑錛岃繖縐頒負綰跨▼鐨勮皟搴?/span>(scheduling)銆?/span> 澶у鏁拌綆楁満浠呮湁涓涓?/span>CPU錛屾墍浠ョ嚎紼嬪繀欏諱笌鍏朵粬綰跨▼鍏變韓CPU銆傚涓嚎紼嬪湪鍗曚釜CPU鏄寜鐓ф煇縐嶉『搴忔墽琛岀殑銆傚疄闄呯殑璋冨害絳栫暐闅忕郴緇熺殑涓嶅悓鑰屼笉鍚岋紝閫氬父綰跨▼璋冨害鍙互閲囩敤涓ょ絳栫暐璋冨害澶勪簬灝辯華鐘舵佺殑綰跨▼銆?/span> (1) 鎶㈠崰寮忚皟搴︾瓥鐣?/span> Java榪愯鏃剁郴緇熺殑綰跨▼璋冨害綆楁硶鏄姠鍗犲紡鐨?/span> (preemptive)銆?/span>Java榪愯鏃剁郴緇熸敮鎸佷竴縐嶇畝鍗曠殑鍥哄畾浼樺厛綰х殑璋冨害綆楁硶銆傚鏋滀竴涓紭鍏堢駭姣斿叾浠栦換浣曞浜庡彲榪愯鐘舵佺殑綰跨▼閮介珮鐨勭嚎紼嬭繘鍏ュ氨緇姸鎬侊紝閭d箞榪愯鏃剁郴緇熷氨浼氶夋嫨璇ョ嚎紼嬭繍琛屻傛柊鐨勪紭鍏堢駭杈冮珮鐨勭嚎紼嬫姠鍗?/span>(preempt)浜嗗叾浠栫嚎紼嬨備絾鏄?/span>Java榪愯鏃剁郴緇熷茍涓嶆姠鍗犲悓浼樺厛綰х殑綰跨▼銆傛崲鍙ヨ瘽璇達紝Java榪愯鏃剁郴緇熶笉鏄垎鏃剁殑(time-slice)銆傜劧鑰岋紝鍩轟簬Java Thread綾葷殑瀹炵幇緋葷粺鍙兘鏄敮鎸佸垎鏃剁殑錛屽洜姝ょ紪鍐欎唬鐮佹椂涓嶈渚濊禆鍒嗘椂銆傚綋緋葷粺涓殑澶勪簬灝辯華鐘舵佺殑綰跨▼閮藉叿鏈夌浉鍚屼紭鍏堢駭鏃訛紝綰跨▼璋冨害紼嬪簭閲囩敤涓縐嶇畝鍗曠殑銆侀潪鎶㈠崰寮忕殑杞漿鐨勮皟搴﹂『搴忋?/span> (2) 鏃墮棿鐗囪疆杞皟搴︾瓥鐣?/span> 鏈変簺緋葷粺鐨勭嚎紼嬭皟搴﹂噰鐢ㄦ椂闂寸墖杞漿(round-robin)璋冨害絳栫暐銆傝繖縐嶈皟搴︾瓥鐣ユ槸浠庢墍鏈夊浜庡氨緇姸鎬佺殑綰跨▼涓夋嫨浼樺厛綰ф渶楂樼殑綰跨▼鍒嗛厤涓瀹氱殑CPU鏃墮棿榪愯銆傝鏃墮棿榪囧悗鍐嶉夋嫨鍏朵粬綰跨▼榪愯銆傚彧鏈夊綋綰跨▼榪愯緇撴潫銆佹斁寮?/span>(yield)CPU鎴栫敱浜庢煇縐嶅師鍥犺繘鍏ラ樆濉炵姸鎬侊紝浣庝紭鍏堢駭鐨勭嚎紼嬫墠鏈夋満浼氭墽琛屻傚鏋滄湁涓や釜浼樺厛綰х浉鍚岀殑綰跨▼閮藉湪絳夊緟CPU錛屽垯璋冨害紼嬪簭浠ヨ疆杞殑鏂瑰紡閫夋嫨榪愯鐨勭嚎紼嬨?/p>
涓涓嚎紼嬪湪鍏剁敓鍛藉懆鏈熶腑鍙互浠庝竴縐嶇姸鎬佹敼鍙樺埌鍙︿竴縐嶇姸鎬侊紝綰跨▼鐘舵佺殑鍙樿縼濡傚浘鎵紺猴細 褰撲竴涓柊寤虹殑綰跨▼璋冪敤瀹冪殑start()鏂規(guī)硶鍚庡嵆榪涘叆灝辯華鐘舵侊紝澶勪簬灝辯華鐘舵佺殑綰跨▼琚嚎紼嬭皟搴︾▼搴忛変腑灝卞彲浠ヨ幏寰?/span>CPU鏃墮棿錛岃繘鍏ヨ繍琛岀姸鎬侊紝璇ョ嚎紼嬪氨寮濮嬭繍琛?/span>run()鏂規(guī)硶銆?/span> 鎺у埗綰跨▼鐨勭粨鏉熺◢寰鏉備竴鐐廣傚鏋滅嚎紼嬬殑run()鏂規(guī)硶鏄竴涓‘瀹氭鏁扮殑寰幆錛屽垯寰幆緇撴潫鍚庯紝綰跨▼榪愯灝辯粨鏉熶簡錛岀嚎紼嬪璞″嵆榪涘叆姝諱骸鐘舵併傚鏋?/span>run()鏂規(guī)硶鏄竴涓笉紜畾寰幆錛屾棭鏈熺殑鏂規(guī)硶鏄皟鐢ㄧ嚎紼嬪璞$殑stop()鏂規(guī)硶錛岀劧鑰岀敱浜庤鏂規(guī)硶鍙兘瀵艱嚧綰跨▼姝婚攣錛屽洜姝や粠1.1鐗堝紑濮嬶紝涓嶆帹鑽愪嬌鐢ㄨ鏂規(guī)硶緇撴潫綰跨▼銆備竴鑸槸閫氳繃璁劇疆涓涓爣蹇楀彉閲忥紝鍦ㄧ▼搴忎腑鏀瑰彉鏍囧織鍙橀噺鐨勫煎疄鐜扮粨鏉熺嚎紼嬨傝鐪嬩笅闈㈢殑渚嬪瓙錛?/span> 紼嬪簭 ThreadStop.java 璇ョ▼搴忓湪Timer綾諱腑瀹氫箟浜嗕竴涓竷?yōu)當鍙橀?/span>flag錛屽悓鏃跺畾涔変簡涓涓?/span>stopRun()鏂規(guī)硶錛屽湪鍏朵腑灝嗚鍙橀噺璁劇疆涓?/span>false銆傚湪涓葷▼搴忎腑閫氳繃璋冪敤璇ユ柟娉曪紝浠庤屾敼鍙樿鍙橀噺鐨勫鹼紝浣垮緱run()鏂規(guī)硶鐨?/span>while寰幆鏉′歡涓嶆弧瓚籌紝浠庤屽疄鐜扮粨鏉熺嚎紼嬬殑榪愯銆?/span> 璇存槑 鍦?/span>Thread綾諱腑闄や簡stop()鏂規(guī)硶琚爣娉ㄤ負涓嶆帹鑽?/span>(deprecated) 浣跨敤澶栵紝suspend()鏂規(guī)硶鍜?/span>resume()鏂規(guī)硶涔熻鏍囨槑涓嶆帹鑽愪嬌鐢紝榪欎袱涓柟娉曞師鏉ョ敤浣滅嚎紼嬬殑鎸傝搗鍜屾仮澶? 澶勪簬榪愯鐘舵佺殑綰跨▼闄や簡鍙互榪涘叆姝諱骸鐘舵佸錛岃繕鍙兘榪涘叆灝辯華鐘舵佸拰闃誨鐘舵併備笅闈㈠垎鍒璁鴻繖涓ょ鎯呭喌錛?/span> (1) 榪愯鐘舵佸埌灝辯華鐘舵?/span> 澶勪簬榪愯鐘舵佺殑綰跨▼濡傛灉璋冪敤浜?/span>yield()鏂規(guī)硶錛岄偅涔堝畠?yōu)畣鏀惧?/span>CPU鏃墮棿錛屼嬌褰撳墠姝e湪榪愯鐨勭嚎紼嬭繘鍏ュ氨緇姸鎬併傝繖鏃舵湁鍑犵鍙兘鐨勬儏鍐碉細濡傛灉娌℃湁鍏朵粬鐨勭嚎紼嬪浜庡氨緇姸鎬佺瓑寰呰繍琛岋紝璇ョ嚎紼嬩細绔嬪嵆緇х畫榪愯錛涘鏋滄湁絳夊緟鐨勭嚎紼嬶紝姝ゆ椂綰跨▼鍥炲埌灝辯華鐘舵佺姸鎬佷笌鍏朵粬綰跨▼绔炰簤CPU鏃墮棿錛屽綋鏈夋瘮璇ョ嚎紼嬩紭鍏堢駭楂樼殑綰跨▼鏃訛紝楂樹紭鍏堢駭鐨勭嚎紼嬭繘鍏ヨ繍琛岀姸鎬侊紝褰撴病鏈夋瘮璇ョ嚎紼嬩紭鍏堢駭楂樼殑綰跨▼鏃訛紝浣嗘湁鍚屼紭鍏堢駭鐨勭嚎紼嬶紝鍒欑敱綰跨▼璋冨害紼嬪簭鏉ュ喅瀹氬摢涓嚎紼嬭繘鍏ヨ繍琛岀姸鎬侊紝鍥犳綰跨▼璋冪敤yield()鏂規(guī)硶鍙兘灝?/span>CPU鏃墮棿璁╃粰鍏鋒湁鍚屼紭鍏堢駭鐨勬垨楂樹紭鍏堢駭鐨勭嚎紼嬭屼笉鑳借緇欎綆浼樺厛綰х殑綰跨▼銆?/span> 涓鑸潵璇達紝鍦ㄨ皟鐢ㄧ嚎紼嬬殑yield()鏂規(guī)硶鍙互浣胯楁椂鐨勭嚎紼嬫殏鍋滄墽琛屼竴孌墊椂闂達紝浣垮叾浠栫嚎紼嬫湁鎵ц鐨勬満浼氥?/span> (2) 榪愯鐘舵佸埌闃誨鐘舵?/span> 鏈夊縐嶅師鍥犲彲浣垮綋鍓嶈繍琛岀殑綰跨▼榪涘叆闃誨鐘舵侊紝榪涘叆闃誨鐘舵佺殑綰跨▼褰撶浉搴旂殑浜嬩歡緇撴潫鎴栨潯浠舵弧瓚蟲椂榪涘叆灝辯華鐘舵併備嬌綰跨▼榪涘叆闃誨鐘舵佸彲鑳芥湁澶氱鍘熷洜錛?/span> ① 綰跨▼璋冪敤浜?/span>sleep()鏂規(guī)硶錛岀嚎紼嬭繘鍏ョ潯鐪犵姸鎬侊紝姝ゆ椂璇ョ嚎紼嬪仠姝㈡墽琛屼竴孌墊椂闂淬傚綋鏃墮棿鍒版椂璇ョ嚎紼嬪洖鍒板氨緇姸鎬侊紝涓庡叾浠栫嚎紼嬬珵浜?/span>CPU鏃墮棿銆?/span> Thread綾諱腑瀹氫箟浜嗕竴涓?/span>interrupt()鏂規(guī)硶銆備竴涓浜庣潯鐪犱腑鐨勭嚎紼嬭嫢璋冪敤浜?/span>interrupt()鏂規(guī)硶錛岃綰跨▼绔嬪嵆緇撴潫鐫$湢榪涘叆灝辯華鐘舵併?/span> ② 濡傛灉涓涓嚎紼嬬殑榪愯闇瑕佽繘琛?/span>I/O鎿嶄綔錛屾瘮濡備粠閿洏鎺ユ敹鏁版嵁錛岃繖鏃剁▼搴忓彲鑳介渶瑕佺瓑寰呯敤鎴風殑杈撳叆錛岃繖鏃跺鏋滆綰跨▼涓鐩村崰鐢?/span>CPU錛屽叾浠栫嚎紼嬪氨寰椾笉鍒拌繍琛屻傝繖縐嶆儏鍐電О涓?/span>I/O闃誨銆傝繖鏃惰綰跨▼灝變細紱誨紑榪愯鐘舵佽岃繘鍏ラ樆濉炵姸鎬併?/span>Java璇█鐨勬墍鏈?/span>I/O鏂規(guī)硶閮藉叿鏈夎繖縐嶈涓恒?/span> ③ 鏈夋椂瑕佹眰褰撳墠綰跨▼鐨勬墽琛屽湪鍙︿竴涓嚎紼嬫墽琛岀粨鏉熷悗鍐嶇戶緇墽琛岋紝榪欐椂鍙互璋冪敤join()鏂規(guī)硶瀹炵幇錛?/span>join()鏂規(guī)硶鏈変笅闈笁縐嶆牸寮忥細 · public void join() throws InterruptedException 浣垮綋鍓嶇嚎紼嬫殏鍋滄墽琛岋紝絳夊緟璋冪敤璇ユ柟娉曠殑綰跨▼緇撴潫鍚庡啀鎵ц褰撳墠綰跨▼銆?/span> · public void join(long millis) throws InterruptedException 鏈澶氱瓑寰?/span>millis姣鍚庯紝褰撳墠綰跨▼緇х畫鎵ц銆?/span> · public void join(long millis, int nanos) throws InterruptedException 鍙互鎸囧畾澶氬皯姣銆佸灝戠撼縐掑悗緇х畫鎵ц褰撳墠綰跨▼銆?/span> 涓婅堪鏂規(guī)硶浣垮綋鍓嶇嚎紼嬫殏鍋滄墽琛岋紝榪涘叆闃誨鐘舵侊紝褰撹皟鐢ㄧ嚎紼嬬粨鏉熸垨鎸囧畾鐨勬椂闂磋繃鍚庯紝褰撳墠綰跨▼綰跨▼榪涘叆灝辯華鐘舵侊紝渚嬪鎵ц涓嬮潰浠g爜錛?/span> t.join(); 灝嗕嬌褰撳墠綰跨▼榪涘叆闃誨鐘舵侊紝褰撶嚎紼?/span>t鎵ц緇撴潫鍚庯紝褰撳墠綰跨▼鎵嶈兘緇х畫鎵ц銆?/span> ④ 綰跨▼璋冪敤浜?/span>wait()鏂規(guī)硶錛岀瓑寰呮煇涓潯浠跺彉閲忥紝姝ゆ椂璇ョ嚎紼嬭繘鍏ラ樆濉炵姸鎬併傜洿鍒拌閫氱煡(璋冪敤浜?/span>notify()鎴?/span>notifyAll()鏂規(guī)硶)緇撴潫絳夊緟鍚庯紝綰跨▼鍥炲埌灝辯華鐘舵併?/span> ⑤ 鍙﹀濡傛灉綰跨▼涓嶈兘鑾峰緱瀵硅薄閿侊紝涔熻繘鍏ュ氨緇姸鎬併?/span> 鍚庝袱縐嶆儏鍐靛湪涓嬩竴鑺傝璁恒?/span>
1.鏂板緩鐘舵?New)錛?nbsp;
褰撶敤new鎿嶄綔絎﹀垱寤轟竴涓嚎紼嬫椂錛?渚嬪new Thread(r)錛岀嚎紼嬭繕娌℃湁寮濮嬭繍琛岋紝姝ゆ椂綰跨▼澶勫湪鏂板緩鐘舵併?褰撲竴涓嚎紼嬪浜庢柊鐢熺姸鎬佹椂錛岀▼搴忚繕娌℃湁寮濮嬭繍琛岀嚎紼嬩腑鐨勪唬鐮?br />
2.灝辯華鐘舵?/span>(Runnable)
3.榪愯鐘舵?/span>(Running)
4. 闃誨鐘舵?/span>(Blocked)
1>綰跨▼閫氳繃璋冪敤sleep鏂規(guī)硶榪涘叆鐫$湢鐘舵侊紱
2>綰跨▼璋冪敤涓涓湪I/O涓婅闃誨鐨勬搷浣滐紝鍗寵鎿嶄綔鍦ㄨ緭鍏ヨ緭鍑烘搷浣滃畬鎴愪箣鍓嶄笉浼氳繑鍥炲埌瀹冪殑璋冪敤鑰咃紱
3>綰跨▼璇曞浘寰楀埌涓涓攣錛岃岃閿佹琚叾浠栫嚎紼嬫寔鏈夛紱
4>綰跨▼鍦ㄧ瓑寰呮煇涓Е鍙戞潯浠訛紱
......
鎵璋撻樆濉炵姸鎬佹槸姝e湪榪愯鐨勭嚎紼嬫病鏈夎繍琛岀粨鏉燂紝鏆傛椂璁╁嚭CPU錛岃繖鏃跺叾浠栧浜庡氨緇姸鎬佺殑綰跨▼灝卞彲浠ヨ幏寰?/span>CPU鏃墮棿錛岃繘鍏ヨ繍琛岀姸鎬併?br />
5. 姝諱骸鐘舵?/span>(Dead)
2) 涓涓湭鎹曡幏鐨勫紓甯哥粓姝簡run鏂規(guī)硶鑰屼嬌綰跨▼鐚濇銆?br /> 涓轟簡紜畾綰跨▼鍦ㄥ綋鍓嶆槸鍚﹀瓨?gòu)z葷潃錛堝氨鏄涔堟槸鍙繍琛岀殑錛岃涔堟槸琚樆濉炰簡錛夛紝闇瑕佷嬌鐢╥sAlive鏂規(guī)硶銆傚鏋滄槸鍙繍琛屾垨琚樆濉烇紝榪欎釜鏂規(guī)硶榪斿洖true錛?濡傛灉綰跨▼浠嶆棫鏄痭ew鐘舵佷笖涓嶆槸鍙繍琛岀殑錛?鎴栬呯嚎紼嬫浜′簡錛屽垯榪斿洖false.2, 綰跨▼鐨勪紭鍏堢駭鍜岃皟搴?/span>
3. 綰跨▼鐘舵佺殑鏀瑰彉
1> 鎺у埗綰跨▼鐨勫惎鍔ㄥ拰緇撴潫
class Timer implements Runnable{
boolean flag=true;
public void run(){
while(flag){
System.out.print("\r\t"+new Date()+"");
try{
Thread.sleep(1000);
}catch(InterruptedException e){}
}
System.out.println("\n"+Thread.currentThread().getName()+" Stop");
}
public void stopRun(){
flag = false;
}
}
public class ThreadStop{
public static void main(String args[]){
Timer timer = new Timer();
Thread thread = new Thread(timer);
thread.setName("Timer");
thread.start();
for(int i=0;i<100;i++){
System.out.print("\r"+i);
try{
Thread.sleep(100);
}catch(InterruptedException e){}
}
timer.stopRun();
}
}
2> 綰跨▼闃誨鏉′歡
澶氱嚎紼嬫槸涓涓▼搴忎腑鍙互鏈夊孌典唬鐮佸悓鏃惰繍琛岋紝閭d箞榪欎簺浠g爜鍐欏湪鍝噷錛屽浣曞垱寤虹嚎紼嬪璞″憿?
棣栧厛錛屾垜浠潵鐪?/span>Java璇█瀹炵幇澶氱嚎紼嬬紪紼嬬殑綾誨拰鎺ュ彛銆傚湪java.lang鍖呬腑瀹氫箟浜?/span>Runnable鎺ュ彛鍜?/span>Thread綾匯?/span>
Runnable鎺ュ彛涓彧瀹氫箟浜嗕竴涓柟娉曪細
· public abstract void run()
榪欎釜鏂規(guī)硶瑕佺敱瀹炵幇浜?/span>Runnable鎺ュ彛鐨勭被瀹炵幇銆?/span>Runnable瀵硅薄縐頒負鍙繍琛屽璞★紝涓涓嚎紼嬬殑榪愯灝辨槸鎵ц璇ュ璞$殑run()鏂規(guī)硶銆?/span>
Thread綾誨疄鐜頒簡Runnable鎺ュ彛錛屽洜姝?/span>Thread瀵硅薄涔熸槸鍙繍琛屽璞°傚悓鏃?/span>Thread綾諱篃鏄嚎紼嬬被錛岃綾葷殑甯哥敤鏋勯犳柟娉曞涓嬶細
· public Thread()
· public Thread(Runnable target)
· public Thread(String name)
· public Thread(Runnable target, String name)
target涓虹嚎紼嬭繍琛岀殑鐩爣瀵硅薄錛屽嵆綰跨▼璋冪敤start()鏂規(guī)硶鍚姩鍚庤繍琛岄偅涓璞$殑run()鏂規(guī)硶錛岃瀵硅薄鐨勭被鍨嬩負Runnable錛岃嫢娌℃湁鎸囧畾鐩爣瀵硅薄錛屽垯浠ュ綋鍓嶇被瀵硅薄涓虹洰鏍囧璞★紝name涓虹嚎紼嬪悕
浠嬬粛涓嬪浣曞垱寤哄拰榪愯綰跨▼鐨勪袱縐嶆柟娉曘傜嚎紼嬭繍琛岀殑浠g爜灝辨槸瀹炵幇浜?/span>Runnable鎺ュ彛鐨勭被鐨?/span>run()鏂規(guī)硶鎴栬呮槸Thread綾葷殑瀛愮被鐨?/span>run()鏂規(guī)硶錛屽洜姝ゆ瀯閫犵嚎紼嬩綋灝辨湁涓ょ鏂規(guī)硶錛?br /> · 緇ф壙Thread綾誨茍瑕嗙洊瀹冪殑run()鏂規(guī)硶錛?br /> · 瀹炵幇Runnable鎺ュ彛騫跺疄鐜板畠鐨?/span>run()鏂規(guī)硶銆?/p>
閫氳繃緇ф壙Thread綾伙紝騫惰鐩?/span>run()鏂規(guī)硶錛岃繖鏃跺氨鍙互鐢ㄨ綾葷殑瀹炰緥浣滀負綰跨▼鐨勭洰鏍囧璞°備笅闈㈢殑紼嬪簭瀹氫箟浜?/span>SimpleThread綾伙紝瀹冪戶鎵夸簡Thread綾誨茍瑕嗙洊浜?/span>run()鏂規(guī)硶銆?/span> 紼嬪簭SimpleThread.java public class SimpleThread extends Thread{ public SimpleThread(String str){ super(str); } public void run(){ for(int i=0; i<100; i++){ System.out.println(getName()+" = "+ i); try{ sleep((int)(Math.random()*100)); }catch(InterruptedException e){} } System.out.println(getName()+ " DONE"); } } _____________________________________________________________________________▃ SimpleThread綾葷戶鎵夸簡Thread綾伙紝騫惰鐩栦簡run()鏂規(guī)硶錛岃鏂規(guī)硶灝辨槸綰跨▼浣撱?/span> 紼嬪簭 ThreadTest.java public class ThreadTest{ public static void main(String args[]){ Thread t1 = new SimpleThread("Runner A"); Thread t2 = new SimpleThread("Runner B"); t1.start(); t2.start(); } } _____________________________________________________________________________▃ 鍦?/span>ThreadTest綾葷殑main()鏂規(guī)硶涓垱寤轟簡涓や釜SimpleThread綾葷殑綰跨▼瀵硅薄騫惰皟鐢ㄧ嚎紼嬬被鐨?/span>start()鏂規(guī)硶鍚姩綰跨▼銆傛瀯閫犵嚎紼嬫椂娌℃湁鎸囧畾鐩爣瀵硅薄錛屾墍浠ョ嚎紼嬪惎鍔ㄥ悗鎵ц鏈被鐨?/span>run()鏂規(guī)硶銆?/span> 娉ㄦ剰錛屽疄闄呬笂ThreadTest紼嬪簭涓湁涓変釜綰跨▼鍚屾椂榪愯錛屽湪搴旂敤紼嬪簭鐨?/span>main()鏂規(guī)硶鍚姩鏃訛紝JVM灝卞垱寤轟竴涓富綰跨▼錛屽湪涓葷嚎紼嬩腑鍙互鍒涘緩鍏朵粬綰跨▼銆?br /> 鍙互瀹氫箟涓涓被瀹炵幇Runnable鎺ュ彛錛岀劧鍚庡皢璇ョ被瀵硅薄浣滀負綰跨▼鐨勭洰鏍囧璞°傚疄鐜?/span>Runnable鎺ュ彛灝辨槸瀹炵幇run()鏂規(guī)硶銆?/span> 涓嬮潰紼嬪簭閫氳繃瀹炵幇Runnable鎺ュ彛鏋勯犵嚎紼嬩綋銆?span lang="EN-US"> 1錛?/font>緇ф壙Thread綾誨垱寤虹嚎紼?/span>
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紼嬪簭 ThreadTest.java
class T1 implements Runnable{
public void run(){
for(int i=0;i<15;i++)
System.out.println("Runner A="+i);
}
}
class T2 implements Runnable{
public void run(){
for(int j=0;j<15;j++)
System.out.println("Runner B="+j);
}
}
public class ThreadTest{
public static void main(String args[]){
Thread t1=new Thread(new T1(),"Thread A");
Thread t2=new Thread(new T2(),"Thread B");
t1.start();
t2.start();
}
}
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