JAVA聊天室（二代）代码仅为原来的一半！性能进一步提升，性能允许的基础上可连接无数客户端，改进了下线CPU占有暴增情况，实现指定人员聊天功能。。 -Java chat rooms (second generation) code is only half of the original! Further enhance the performance of numerous client can be connected on the basis of performance allows improved offline CPU occupies a surge, the designated officer chat feature. .