每个输入/输出后是否需要重新创建DataInputStream或DataOutputStream

Question

Hello so I was just wondering. I am creating multiplayer for my game and if I want to send something should I use:

dos = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
dos.writeUTF(username);

dos = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
dos.writeUTF("test");

dis = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
String loginResponse = dis.readUTF();

or should I use:

dos = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
dos.writeUTF(username);
dos.writeUTF("test");

dis = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
String loginResponse = dis.readUTF();

Answer 1

You should create one IOStream and do with it what you need to do with it, without creating a new one every time.

If you would create a new one everytime, theoretically you'd just be filling up memory unnecessarily.