PrintWriter用法案例

这个东西用的比较少，今天看书时遇到了，整理一下：

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public static void main(String[] args) throws IOException {
    ServerSocket serverSocket = new ServerSocket(7000);
    Socket clientSocket = serverSocket.accept();

    BufferedReader br = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
    PrintWriter pw = new PrintWriter(clientSocket.getOutputStream(), true);

    String request, response;
    while ((request = br.readLine()) != null) {
        if ("Done".equals(request)) {
            break;
        }
        response = request;
        pw.println(response);
    }
}