线程的死锁

代码来源于《并发编程之美》

public class deadlock {


    private static Object resources1 = new Object();

    private static Object resources2 = new Object();
 

    public static void main( String [] args ){

        new Thread(()->{
                    synchronized (resources1){
                        System.out.println(Thread.currentThread()+"get resources1");

                        try{
                            Thread.sleep(1000);
                        } catch (InterruptedException e) {
                            throw new RuntimeException(e);
                        }

                        System.out.println(Thread.currentThread()+" waitting get resources2");

                        synchronized ( resources2 ){
                            System.out.println(Thread.currentThread()+"get resources2");
                        }
                    }
                },"线程1").start();

        new Thread(()->{
                    synchronized (resources2){
                        System.out.println(Thread.currentThread()+"get resources2");

                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException e) {
                            throw new RuntimeException(e);
                        }

                        System.out.println(Thread.currentThread()+" waitting get resources1");

                        synchronized (resources1){
                            System.out.println(Thread.currentThread()+"get resources1");
                        }

                    }
                },"线程2").start();
    }

}

运行结果

Thread[线程1,5,main]get resources1
Thread[线程2,5,main]get resources2
Thread[线程1,5,main] waitting get resources2
Thread[线程2,5,main] waitting get resources1