SocketsBairasheva

//Клиент
package hw13;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;
import java.io.*;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

class PictureFrame extends JFrame implements Serializable {
    private boolean a = false;

    public PictureFrame() {
        setSize(800, 600);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        JPanel picture2 = new JPanel();
        picture2.setLayout(new CardLayout());
        PaintComponent1 smile1 = new PaintComponent1();
        PaintComponent2 smile2 = new PaintComponent2();
        picture2.add(smile1);
        picture2.add(smile2);
        JPanel panelforbtn = new JPanel();
        panelforbtn.setLayout(new FlowLayout());
        JButton button = new JButton("Change channel");
        ((CardLayout) picture2.getLayout()).first(picture2);
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                if (e.getSource() == button) {
                    if (a) {
                        ((CardLayout) picture2.getLayout()).first(picture2);
                        a = false;
                    } else {
                        ((CardLayout) picture2.getLayout()).last(picture2);
                        a = true;
                    }
                }
            }
        });
        panelforbtn.add(button);
        getContentPane().add("Center", picture2);
        getContentPane().add("South", panelforbtn);
    }
}

class PaintComponent1 extends JComponent {
    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        //телевизор
        g2.setPaint(new Color(93, 95, 107));
        Rectangle2D k1 = new Rectangle2D.Double(200, 100, 400, 300);
        g2.fill(k1);
        g2.draw(k1);
        Rectangle2D k3 = new Rectangle2D.Double(380, 400, 40, 80);
        g2.fill(k3);
        g2.draw(k3);
        Rectangle2D k4 = new Rectangle2D.Double(300, 480, 200, 10);
        g2.fill(k4);
        g2.draw(k4);
        g2.setPaint(new Color(144, 215, 248));
        Rectangle2D k2 = new Rectangle2D.Double(220, 120, 360, 260);
        g2.fill(k2);
        g2.draw(k2);
        //смайлик
        g2.setPaint(new Color(255, 203, 0));
        Ellipse2D ellipse1 = new Ellipse2D.Double(330, 170, 150, 150);
        g2.fill(ellipse1);
        g2.draw(ellipse1);
        g2.setPaint(new Color(61, 56, 56));
        Ellipse2D ellipse2 = new Ellipse2D.Double(370, 210, 20, 20);
        g2.fill(ellipse2);
        g2.draw(ellipse2);
        Ellipse2D ellipse3 = new Ellipse2D.Double(420, 210, 20, 20);
        g2.fill(ellipse3);
        g2.draw(ellipse3);
        Rectangle2D k5 = new Rectangle2D.Double(370, 265, 70, 10);
        g2.fill(k5);
        g2.draw(k5);
    }
}

class PaintComponent2 extends JComponent {
    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        //телевизор
        g2.setPaint(new Color(93, 95, 107));
        Rectangle2D k1 = new Rectangle2D.Double(200, 100, 400, 300);
        g2.fill(k1);
        g2.draw(k1);
        Rectangle2D k3 = new Rectangle2D.Double(380, 400, 40, 80);
        g2.fill(k3);
        g2.draw(k3);
        Rectangle2D k4 = new Rectangle2D.Double(300, 480, 200, 10);
        g2.fill(k4);
        g2.draw(k4);
        g2.setPaint(new Color(103, 255, 109));
        Rectangle2D k2 = new Rectangle2D.Double(220, 120, 360, 260);
        g2.fill(k2);
        g2.draw(k2);
        //смайлик(удивленный)
        g2.setPaint(new Color(255, 203, 0));
        Ellipse2D ellipse1 = new Ellipse2D.Double(330, 170, 150, 150);
        g2.fill(ellipse1);
        g2.draw(ellipse1);
        g2.setPaint(new Color(61, 56, 56));
        Ellipse2D ellipse2 = new Ellipse2D.Double(370, 210, 20, 30);
        g2.fill(ellipse2);
        g2.draw(ellipse2);
        Ellipse2D ellipse3 = new Ellipse2D.Double(420, 210, 20, 30);
        g2.fill(ellipse3);
        g2.draw(ellipse3);
        Ellipse2D k5 = new Ellipse2D.Double(380, 265, 50, 35);
        g2.fill(k5);
        g2.draw(k5);
    }
}

public class Client {
    private static final String host = "localhost";
    private static final int port = 11111;

    private static DatagramPacket createPacket() {
        try {
            //Используем сериализацию, т.е. записываем данные объекта в поток
            ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("picture.dat"));
            PictureFrame pictureFrame = new PictureFrame();
            pictureFrame.setTitle("Client's picture");
            pictureFrame.setVisible(true);
            oos.writeObject(pictureFrame);
            //Считываем файл picture.dat в буфер, для DatagramPacket
            FileInputStream fin = new FileInputStream("picture.dat");
            byte[] buffer = new byte[fin.available()];
            fin.read(buffer, 0, fin.available());
            InetAddress IPAdress = InetAddress.getByName(host);
            return new DatagramPacket(buffer, buffer.length, IPAdress, port);
        } catch (Exception ex) {
            ex.getMessage();
        }
        return null;
    }

    public static void main(String[] args) throws Exception {
        try (DatagramSocket socket = new DatagramSocket()) {
            DatagramPacket packet = createPacket();
            socket.send(packet);
        }
    }
}
//Сервер
package hw13;

import java.io.*;
import java.net.DatagramPacket;
import java.net.DatagramSocket;

public class Server {
    private static final int port = 11111;

    public static void decodePacket(DatagramPacket packet) throws IOException {
        try {
            FileOutputStream fos = new FileOutputStream("serverpicture.dat");
            fos.write(packet.getData());
            //чтение ранее сериализованных данных из потока
            FileInputStream fin = new FileInputStream("serverpicture.dat");
            ObjectInputStream ois = new ObjectInputStream(fin);
            PictureFrame pic = (PictureFrame) ois.readObject();
            pic.setTitle("Server's picture");
            pic.setVisible(true);
        } catch (Exception ex) {
            ex.getMessage();
        }
    }

    public static void main(String[] args) throws IOException {
        try (DatagramSocket socket = new DatagramSocket(port)) {
            byte[] buf = new byte[10000];
            DatagramPacket packet = new DatagramPacket(buf, buf.length);
            while (true) {
                socket.receive(packet);
                decodePacket(packet);
            }
        }
    }
}