Java线程连接方法

Java线程连接方法,java,Java,在我的程序中,线程T1生成一个新线程T2并在该线程上调用join(即T2.join),而这个新生成的线程T2在T1上调用join(即T1.join)。这会导致线程阻塞。如何克服这一问题。 我的节目 public class PositiveNegativeNumberProducerV1 { static Thread evenThread, oddThread; public static void main(String[] args) { oddThre

在我的程序中,线程T1生成一个新线程T2并在该线程上调用join(即T2.join),而这个新生成的线程T2在T1上调用join(即T1.join)。这会导致线程阻塞。如何克服这一问题。 我的节目

public class PositiveNegativeNumberProducerV1 {
    static Thread evenThread, oddThread;

    public static void main(String[] args) {

        oddThread = new Thread(new OddProducer(evenThread), "oddThread");
        oddThread.start();


    }

}
class EvenProducer implements Runnable {
    Thread t;
    EvenProducer(Thread t) {
        this.t= t;
    }
    public void run() {
        for(int i=1; i<=100; i++) {
            if(i%2==0) {
                System.out.println("i = "+i+":"+Thread.currentThread().getName());
                try {
                    System.out.println("Now join will be called on "+t.getName()+" by thread "+Thread.currentThread().getName());
                    t.join();
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }
}

class OddProducer implements Runnable {
    Thread t;
    OddProducer(Thread t) {
        this.t= t;
    }
    public void run() {
        for(int i=1; i<=100; i++) {
            if(i%2!=0) {
                System.out.println("i = "+i+":"+Thread.currentThread().getName());
                try {
                    if(t==null) {
                        t = new Thread(new EvenProducer(PositiveNegativeNumberProducerV1.oddThread), "evenThread");
                        t.start();
                    }
                    if(t.isAlive()) {
                        System.out.println("evenThread is alive and join will be called on "+t.getName()+" by thread "+Thread.currentThread().getName());
                        t.join();
                    }
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }
}
公共类PositiveNegativeNumberProducerV1{
静态线程evenThread,oddThread;
公共静态void main(字符串[]args){
oddThread=新线程(新OddProducer(evenThread),“oddThread”);
oddThread.start();
}
}
类实现Runnable{
螺纹t;
均匀度(螺纹t){
t=t;
}
公开募捐{

对于(int i=1;i),如果您只想同步输出:1、2、3、4……那么就不应该使用连接(等待线程终止,即离开run方法)。考虑使用信号量对象上的WaIT()和NoTIFYY()对。
        Object sema = new Object();

        new Thread( new Runnable() {
            @Override
            public void run()
            {
                for ( int i = 1; i <= 100; i++ )
                {
                    if ( i % 2 == 0 )
                    {
                        try
                        {
                            System.out.println( "Going to wait for the odd thread - "
                                + Thread.currentThread().getName());
                            synchronized (sema)
                            {
                                sema.wait();
                            }

                            System.out.println( "i = " + i + ":" + Thread.currentThread().getName());

                            System.out.println( "Going to notify the odd thread - "
                                + Thread.currentThread().getName());
                            synchronized (sema)
                            {
                                sema.notify();
                            }
                        }
                        catch ( InterruptedException e )
                        {
                            e.printStackTrace();
                        }
                    }
                }
            }
        }, "Even").start();

        new Thread( new Runnable() {
            @Override
            public void run()
            {
                for ( int i = 1; i <= 100; i++ )
                {
                    if ( i % 2 != 0 )
                    {
                        System.out.println( "i = " + i + ":" + Thread.currentThread().getName());
                        try
                        {
                            System.out.println( "Going to notify the even thread"
                                + Thread.currentThread().getName());
                            synchronized (sema)
                            {
                                sema.notify();
                            }
                            System.out.println( "Going to wait for the even thread"
                                + Thread.currentThread().getName());
                            synchronized (sema)
                            {
                                sema.wait();
                            }
                        }
                        catch ( InterruptedException e )
                        {
                            e.printStackTrace();
                        }
                    }
                }
            }
        }, "Odd").start();
Object sema=new Object();
新线程(newrunnable()){
@凌驾
公开募捐
{

对于(int i=1;我不这么做;这就是你克服它的方法。想象两个人想穿过同一扇门,每个人都等着另一个人穿过,然后再穿过自己——这就是僵局的定义。Boris你的句子缺少一个动词。@GhostCat动词是给失败者的。至少根据苹果自动更正。但是Bor就在那里,那根本不可能。所以答案是退一步,找出一个解决方案,在不进行这种相互连接的情况下提供你所需要的。鲍里斯:至少你的苹果产品正确地做了@的事情。Chrome/Android不适合我。