deadlock.java

nanjing university cs 的java课件。 对新手很有用。付课件中源码。

public class DeadLock
    implements Runnable {
    A a = new A();
    B b = new B();
    DeadLock() {
        Thread.currentThread().setName("MainThread");
        new Thread(this).start();
        a.foo(b);
    }

    public void run() {
        Thread.currentThread().setName("RacingThread");
        b.bar(a);
    }

    public static void main(String args[]) {
        new DeadLock();
    }
    
	class A {
	    synchronized void foo(B b) {
	        try {
	        	System.out.println("inside A.foo");
	            Thread.sleep(1000);
	        }
	        catch (Exception e) {}
	        b.last();
	    }
	
	    synchronized void last() {
	        System.out.println("inside A.last");
	    }
	}
	
	class B {
	    synchronized void bar(A a) {
	        try {
	        	System.out.println("inside B.bar");
	            Thread.sleep(1000);
	        }
	        catch (Exception e) {}
	        a.last();
	    }
	
	    synchronized void last() {
	        System.out.println("inside B.last");
	    }
	}
}