import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

public class GeschwungeneLinieZeichnen {


    public GeschwungeneLinieZeichnen() {
        init();
    }
    
    private void init() {
        JPanel panel = new JPanel() {
            @Override
            public void paintComponent(Graphics g) {
                g.setColor(Color.WHITE);
                g.fillRect(0, 0, this.getWidth(), this.getHeight());
                
                g.setColor(Color.RED);
                g.drawLine(100,10,100,100);
                g.setColor(Color.GREEN);
                g.drawArc(100, 75, 50, 50, 180, 90);
                g.setColor(Color.BLUE);
                g.drawArc(100, 125, 50, 50, 90, -180);
                g.setColor(Color.BLACK);
                g.drawArc(115, 175, 20, 20, 90, 180);
                g.drawArc(120, 195, 10, 10, 90, -180);
            }
            @Override
            public Dimension getPreferredSize() {
                return new Dimension(300, 300);
            }
        };
        JFrame frame = new JFrame("Geschwungene Linie zeichnen");
        frame.add(panel);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new GeschwungeneLinieZeichnen());
    }
}