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内存一致性错误和线程干扰之间有什么区别？如何使用同步来避免它们的不同？请举例说明.我无法从sun Java教程中得到这个.任何阅读材料的建议,只是在java的上下文中理解这将是有帮助的.

/*
This should always produce 0 as output since all three methods increment(), decrement(), value()  are thread safe(synchronized).  but it is returning 1
*/

class Counter implements Runnable {
    private int c = 0;

    public  synchronized void increment() {
        c++;
    }
    public synchronized void decrement() {
        c--;
    }
    public synchronized int value() {
        return c;
    }
    public void run() {
        try {
            this.increment();
            Thread.sleep(1000);
            this.decrement();
            Thread.sleep(1000);
            this.increment();
            Thread.sleep(1000);
            this.decrement();
            Thread.sleep(1000);
        }
        catch (InterruptedException e){
            return;
        }
    }
    public static void …