import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class DrawSwing {

    public static void main(String[] args) {
        new DrawSwing();
    }

    public DrawSwing() {
        SwingUtilities.invokeLater(() -> createGUI());
    }

    protected void createGUI() {
    JFrame jf = new JFrame();
    jf.setTitle("Rysowanie");
    jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    jf.setLocation(50,50);
    jf.setResizable(false);
    jf.setLayout(new BorderLayout());
    MyPanel p = new MyPanel();
    JPanel buttonPanel = new JPanel();
    JButton setButton = new JButton("Ustaw");
    JTextField width = new JTextField();
    width.setColumns(3);
    JTextField height = new JTextField();
    height.setColumns(3);
    setButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
                p.setSizeLogo(Integer.parseInt(width.getText()), Integer.parseInt(height.getText()));
                jf.repaint();
        }
    });
    buttonPanel.add(width);
    buttonPanel.add(height);
    buttonPanel.add(setButton);
    jf.add(buttonPanel, BorderLayout.NORTH);
    jf.add(p, BorderLayout.CENTER);
    jf.pack();
    jf.setVisible(true);
    }
}

class MyPanel extends JPanel {
    private int width;
    private int height;

    MyPanel() {
        setPreferredSize(new Dimension(400,400));
        width = 400;
        height = 400;
    }

    public void setSizeLogo(int width, int height) {
        this.width = width;
        this.height = height;
    }

    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.setColor(Color.red);
        g.fillOval(0,0,width,height);
        g.setColor(Color.white);
        g.fillArc(width/20, height/20, width - (width/10), height - (height/10), 0, 180);
    }
}