為什么運行結果與老師不同？
代碼與老師一樣，但運行結果如下：
并不是每個線程分別演出10次，這是什么原因呢？看了下別的答案好像和電腦的CPU核數有關，但還不是很清楚，有人能比較清楚地介紹下嗎？
另外，怎么控制才能和老師的輸出結果一樣呢？
萬分感謝！
以下是我的代碼
public?class?Actor?extends?Thread?{
????public?void?run()?{
???????System.out.println(getName()+"登臺演出了！");
???????int?count=0;
???????boolean?keepRunning=true;
???????while(keepRunning)?{
???????????System.out.println(getName()+"登臺演出了："+(++count));
???????????if(count==100)
??????????????keepRunning=false;
???????????if(count%10==0)?{
??????????????try?{
??????????????????Thread.sleep(1000);
??????????????}?catch?(InterruptedException?e)?{
??????????????????e.printStackTrace();
??????????????}
???????????}
???????}
???????System.out.println(getName()+"的演出結束了");
????}
???
????public?static?void?main(String[]?args)?{
???????Thread?actor=?new?Actor();?????
???????actor.setName("Mr.?Thread");
???????actor.start();
???????Thread?actress?=?new?Thread(new?Actress(),?"Ms.?Runnable");
???????actress.start();
????}
}
?
class?Actress?implements?Runnable{
????public?void?run()?{
???????System.out.println(Thread.currentThread().getName()+"登臺演出了！");
???????int?count=0;
???????boolean?keepRunning=true;
???????while(keepRunning)?{
???????????System.out.println(Thread.currentThread().getName()+"登臺演出了："+(++count));
???????????if(count==100)
??????????????keepRunning=false;
???????????if(count%10==0)?{
??????????????try?{
??????????????????Thread.sleep(1000);
??????????????}?catch?(InterruptedException?e)?{
??????????????????e.printStackTrace();
??????????????}
???????????}
???????}
???????System.out.println(Thread.currentThread().getName()+"的演出結束了");
????}
}
2018-07-17
嘿嘿，多運行幾次你就會發現，結果不會總是一樣的，多核計算機的時間片分配問題
2018-04-21
??? public void run() {
?????? System.out.println(getName()+"登臺演出了！");
?????? int count=0;
?????? boolean keepRunning=true;
?????? while(keepRunning) {
?????????? System.out.println(getName()+"登臺演出了："+(++count));
?????????? if(count==100)
????????????? keepRunning=false;
?????????? if(count%10==0) {
????????????? try {
????????????????? Thread.sleep(1000);
????????????? } catch (InterruptedException e) {
????????????????? e.printStackTrace();
????????????? }
?????????? }
?????? }
?????? System.out.println(getName()+"的演出結束了");
??? }
???
??? public static void main(String[] args) {
?????? Thread actor= new Actor();?????
?????? actor.setName("Mr. Thread");
?????? actor.start();
?????? Thread actress = new Thread(new Actress(), "Ms. Runnable");
?????? actress.start();
??? }
}
?
class Actress implements Runnable{
??? public void run() {
?????? System.out.println(Thread.currentThread().getName()+"登臺演出了！");
?????? int count=0;
?????? boolean keepRunning=true;
?????? while(keepRunning) {
?????????? System.out.println(Thread.currentThread().getName()+"登臺演出了："+(++count));
?????????? if(count==100)
????????????? keepRunning=false;
?????????? if(count%10==0) {
????????????? try {
????????????????? Thread.sleep(1000);
????????????? } catch (InterruptedException e) {
????????????????? e.printStackTrace();
????????????? }
?????????? }
?????? }
?????? System.out.println(Thread.currentThread().getName()+"的演出結束了");
??? }
}