public class DisplayFaceObject extends MyFrame {
    public void run() {
        Face[] faces=new Face[5]; // ここを変更 ★１
        faces[0]=new Face(50, 50, 10, 5);
        faces[1]=new Face(200, 100, -10, -5);
        faces[2]=new Face(0, 100, 5, 0);
        faces[3]=new Face(200, 100, -5, 0);
        faces[4]=new Face(100, 0, 0, 5); // ここを追加 ★２
        for (int i=0; i<30; i++) {
            clear();
            for (int j=0; j<faces.length; j++) {
                faces[j].draw(this);
                faces[j].move();
            }
            sleep(0.1);
        }
    }
}
