标签：compile ora mon after out rup monitor statement gre
void waitForSignal() { Object obj = new Object(); synchronized(Thread.currentThread()) { obj.wait(); obj.notify(); } }
This code may throw an InterruptedException
This code may throw an IllegalStateException
This code may throw a TimeOutException after ten minutes
This code will not compile unless”obj.wait()”is replaced with”(Thread)obj).wait()”
Reversing the order of obj.wait()and obj.notify()may cause this method to complete normally
这题有两个错误的地方，第一个错误是 wait() 方法要以 try/catch 包覆，或是掷出 InterruptedException 才行
因此答案就是因为缺少例外捕捉的 InterruptedException
第二个错误的地方是， synchronized 的目标与 wait() 方法的物件不相同，会有 IllegalMonitorStateException ，不过 InterruptedException 会先出现，所以这不是答案
最后正确的程式码应该是这样：
void waitForSignal() { Object obj = new Object(); synchronized (obj) { try { obj.wait(); } catch (InterruptedException e) { e.printStackTrace(); } obj.notify(); } }
标签：compile ora mon after out rup monitor statement gre
原文地址：http://www.cnblogs.com/Toddll/p/7359852.html
