Java：空while循环

繁忙的等待非常昂贵。我会这样：

Object LOCK = new Object(); // just something to lock onsynchronized (LOCK) {    while (path != null) {        try { LOCK.wait(); }        catch (InterruptedException e) { // treat interrupt as exit request break;        }    }}

然后，当您设置

path

synchronized (LOCK) {    LOCK.notifyAll();}

（

this