調用wait拋IllegalMonitorStateException

private void testWait(){
        Thread thread = new Thread(() -> {
            synchronized (Log.class) {
                try {
                    this.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
        thread.start();
    }

當我們執行上面一段代碼的時候會出現IllegalMonitorStateException  咋一看沒問題啊  wait是在同步方法裏啊 咋還報着異常了  但是當仔細看時發現鎖對象和調用wait方法的對象不是同一對象  當出現這一情況時就會拋該異常 可以做以下更改

private void testWait(){
        Thread thread = new Thread(() -> {
            synchronized (Log.class) {
                try {
                    Log.class.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
        thread.start();
    }