基于UDP通讯的聊天室，使用DatagramSocket DatagraPachet,实现聊天功能，多线程操作

关于网络编程的源代码，分别写了DatagramSocket与DatagramPacket、Socket与ServerSocket、URL与URLConnection等还包括javaeeJar包-On network programming source code, written, respectively, DatagramSocket and DatagramPacket, Socket and ServerSocket, URL and URLConnection other packag

在DatagramSocket 上总是启用UDP 广播发送。为了接收广播包，应该将DatagramSocket 绑定到通配符地址。在某些实现中，将DatagramSocket 绑定到一个更加具体的地址时 ... -The DatagramSocket on UDP broadcasts sends are always enabled. In order to receive broadcast packets DatagramSocket should be bound to the wi