import java.awt.Color;
import java.awt.*;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Animation {

    JFrame frame;
    Figura figura;

    private int oneX = 200;
    private int oneY = 200;

    private int dX = 1;
    private int dY = 1;

    public static void main(String[] args)
    {
        new Animation().go();
    }

    private void go()
    {
        frame = new JFrame("Test");
        figura = new Figura();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setResizable(false);
        frame.setSize(1900, 1000);
        frame.add(figura);
        frame.setVisible(true);
        moveIt();

    }

    class Figura extends JPanel
    {
        public void paintComponent(Graphics g)
        {

            int xPoints[] = {oneX , oneX + 50 , oneX + 100 ,  oneX + 50};

            int yPoints[] = {oneY , oneY -75 , oneY , oneY + 75};

            g.setColor(Color.orange);
            g.fillPolygon(xPoints, yPoints, xPoints.length);

        }
    }

    private void moveIt()
    {
        while (true)
        {


            oneX +=dX;

                oneY = (int) (100 * Math.cos(Math.toRadians((oneX +dX))))+ 200;

            if (oneX + dX < 0 || oneX + dX > 1500) {
                dX = -dX;
            }
            try
            {
                Thread.sleep(1);
            }
            catch (Exception e)
            {
                e.printStackTrace();
            }
            frame.repaint();
        }
    }

    //тут можна дописати новий метод
}