嗨,我想遍历我拥有的n
个端口列表,并为每个端口创建一个DatagramSocket:
for(int i = 0; i < portList.size(); i++) {
DatagramSocket socket[i] = new DatagramSocket();
socket[i].connect(InetAddress.getLocalHost(), portList.get(i));
}
我知道我不应该使用
socket[i]
。只是表达我的意思,以上内容会生成:DatagramSocket socket1 = new DatagramSocket();
socket1.connect(InetAddress.getLocalHost(), 2000);
DatagramSocket socket2 = new DatagramSocket();
socket2.connect(InetAddress.getLocalHost(), 2001);
DatagramSocket socket3 = new DatagramSocket();
socket3.connect(InetAddress.getLocalHost(), 2002);
DatagramSocket socket4 = new DatagramSocket();
socket4.connect(InetAddress.getLocalHost(), 2003);
我不太擅长Java,所以这可能是一个愚蠢的问题:P
最佳答案
罗素的答案很好。总结一下,这是我要写的:
//get local host
InetAddress localHost = InetAddress.getLocalHost();
//make a List to hold the sockets
//we know how many there will be so use that capacity
List<DatagramSocket> datagramSockets =
new ArrayList<DatagramSocket>(portList.size());
//for each port,
for (Integer port : portList) {
//instantiate a new socket
DatagramSocket datagramSocket = new DatagramSocket();
//add it to the list
datagramSockets.add(datagramSocket);
//connect it using the port
datagramSocket.connect(localHost, port);
}