奇葩面试题:线程调用两次start方法会怎样?
public synchronized void start { #技术分享 if (threadStatus != 0) throw new IllegalThreadStateException; group.add(this);boolean start
public synchronized void start { #技术分享 if (threadStatus != 0) throw new IllegalThreadStateException; group.add(this);boolean start
当“618”“双11”的GMV曲线一年比一年平缓,当“满300减30”再也撩不动消费者,市场终于意识到:不是折扣不够狠,而是“无感”——买与不买,优惠就在那里,不心疼、不惊喜、不值得发朋友圈。