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+import java.io.*;%0Aimport java.net.ServerSocket;%0Aimport java.net.Socket;%0A%0A/**%0A * Created by David on 13/03/2017.%0A */%0A@SuppressWarnings(%22unused%22)%0Apublic class Main %7B%0A    public static void main(String args%5B%5D) throws IOException %7B%0A    %09new MainInterface().setVisible(true);%0A    %7D%0A%7D%0A

Create Main.java