java线程

问题补充说明：class Hy implements Runnable{ private int ticket = 0 ; public void setTicket(int ticket){ this.ticket = ticket; } public int getTicket(){ return this.ticket; } public void run(){ ***.fun(); } public synchronized void fun(){ for(int x=0;x<20000;x++){ if(this.ticket>0){ try{ Thread.sleep(30); }catch(InterruptedException e){ e.printStackTrace(); } System.out.println(Thread.currentThread().getName() + "窗口卖票" + this.ticket--); } } }}public class StringBufferDemo01{ public static void main(String args[]){ Hy t1 = new Hy(); int ticket = 10; System.out.println("开始卖票,总票张数为:" + ticket ); t1.setTicket(ticket); Thread d1 = new Thread(t1,"A"); Thread d2 = new Thread(t1,"B"); Thread d3 = new Thread(t1,"C"); d1.start(); d2.start(); d3.start(); }}此道程序为什么只启动d1线程 其它两个均未启动

问题在于线程1进入同步方法后要把票卖完后才退出，其它线程无法进入此同步来自方法，当线程1卖完票后，360问答其它线程进入，但是已经没有票卖了。

我给你改了下:

packagetest;

c底雷lassHyimplementsRunnable

{

privateint血证ticket=0;

publicvoidsetTicket(intti举纸始东右研磁的关油cket){

this.ticket=ticket;

}

publicintgetTicket(){

returnthis.ticket;

}

publicvoidrun(){

while(tru相反跑况哪东校纪只喜e){

***.fun();

}

}

publicsynchronizedvoidfun(){

for(intx=0;x<20000;x++){

if(this.ticket>0){

try{

Thread.sleep(30);

}catch(Interr促附胞器切盾垂械弱事垂uptedExceptione){

e.printStackTrace();

}

System.out.p青rintln(Thread.currentThread().getName()+"窗口卖票"+t营每呼具仍唱his.ticket--);

}

break;

}

}

}

publicclassTest

{

publics师备里益taticvoidmain(Stringargs[]){

Hyt1=newHy();

intticket=10;

System.out.p飞讨低谓rintln("开始卖票,总票张数为:"+ticket);

t1.setT点序章接icket(ticket);

Threadd1=newThread(t1,"A");

Threadd2=newThread(t1,"B")协料;

Threadd3=n包改景充花ewThread(t1,"C");

d1.start宁岁();

d2.st衡判守广让居激开art();

d3.start();

}

}

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