java 多线程

package com.jack.test2;

public class MyRunnable implements Runnable {

    int tikets = 20;

    @Override
    public void run() {
        while (true) {
            if (tikets > 0) {
                System.out.println(Thread.currentThread().getName() + "卖票中：第" + (21 - tikets) + "张票");

                tikets--;
            }

        }
    }
}

package com.jack.test2;


public class main {

    public static void main(String[] args) {
        MyRunnable run= new MyRunnable();

        Thread r1 = new Thread(run);
        Thread r2 = new Thread(run);

        r1.start();
        r2.start();


    }


}

"D:Program Files (x86)Javajdk1.8.0_71injava.exe" "-javaagent:D:Program FilesJetBrainsIntelliJ IDEA 2018.3.3libidea_rt.jar=59348:D:Program FilesJetBrainsIntelliJ IDEA 2018.3.3in" -Dfile.encoding=UTF-8 -classpath "D:Program Files (x86)Javajdk1.8.0_71jrelibcharsets.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibdeploy.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextaccess-bridge-32.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextcldrdata.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextdnsns.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextjaccess.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextjfxrt.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextlocaledata.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibext
ashorn.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextsunec.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextsunjce_provider.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextsunmscapi.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextsunpkcs11.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibextzipfs.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibjavaws.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibjce.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibjfr.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibjfxswt.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibjsse.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibmanagement-agent.jar;D:Program Files (x86)Javajdk1.8.0_71jrelibplugin.jar;D:Program Files (x86)Javajdk1.8.0_71jrelib
esources.jar;D:Program Files (x86)Javajdk1.8.0_71jrelib
t.jar;D:usersligenyunIdeaProjectsTestoutproductionday1" com.jack.test2.main
Thread-0卖票中：第1张票
Thread-1卖票中：第1张票
Thread-1卖票中：第3张票
Thread-1卖票中：第4张票
Thread-0卖票中：第2张票
Thread-1卖票中：第5张票
Thread-0卖票中：第6张票
Thread-1卖票中：第7张票
Thread-0卖票中：第8张票
Thread-1卖票中：第9张票
Thread-0卖票中：第10张票
Thread-1卖票中：第11张票
Thread-0卖票中：第12张票
Thread-1卖票中：第13张票
Thread-0卖票中：第14张票
Thread-1卖票中：第15张票
Thread-0卖票中：第16张票
Thread-1卖票中：第17张票
Thread-0卖票中：第18张票
Thread-1卖票中：第19张票
Thread-0卖票中：第20张票