java severSocket 的问题

Question

Socket socket=serverSocket.accept();

         //Create data input and output streams
         DataInputStream inputFromClient=new DataInputStream(socket.getInputStream());
         DataOutputStream outputToClient=new DataOutputStream(socket.getOutputStream());

         //receive radius from the client and output the result to client
         while(true){
                double radius=inputFromClient.readDouble();
                double area=radius*radius*Math.PI;

                outputToClient.writeDouble(area);

                jta.append("Radius received from client:"+radius+'\n');
                jta.append("Area found:"+area+'\n');
                 jta.append("currentThread()"+Thread.currentThread().toString()+Thread.currentThread().getState().toString());
                web_coummunication.Demo_web_coummunication.<init>()");
         }

在定义了serverSocket之后定义了一个死循环用于接收与发送信息；为甚么只有收到客户端信息后这个死循环的代码才会执行，而不是一直执行？

Answer 1

肯定啦，inputFromClient.readDouble() 执行到这句，就等待你收到信息，才执行下面的代码