import java.awt.Graphics2D; import myMath.MyCurve; import myMath.Tpl20; public class TestMyParameter09 extends Tpl20 { public void draw2(Graphics2D g2) { MyPara1 pf = new MyPara1(); draw(pf, 0, 2 * Math.PI); } class MyPara1 extends MyCurve { public void p(double t) { x = Math.pow(Math.cos(t), 3); y = Math.pow(Math.sin(t), 3); } } }