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Can you have an PrintWriter and ObjectOutputStream on the same sockets output stream?
out_stream = new PrintWriter(socket.getOutputStream(), true);
obj_stream = new ObjectOutputStream(socket.getOutputStream();
You can but you have to take care of buffering. A
PrintWriteror anObjectOutputStreamaccepts data, which it converts into bytes, to be sent on the underlying stream (here the socket) at some point. Buffering is about waiting a bit before writing out such bytes, so that the bytes can be sent in “big chunks” rather than individually.Read the Javadoc about buffering, and use
flush()onPrintWriterandObjectOutputStreamwhen you want to get sure that the bytes get written on the socket.