在圆圈内点击画线

如何解决在圆圈内点击画线

您好，我正在尝试在圆内画线，我已经创建了一个圆，但是当我需要使用鼠标单击来画线时，我卡在了该部分。我需要这样的东西：

public class DrawCircle extends JFrame implements MouseListener {

private double radius = 0.0;
private double diameter ;

public DrawCircle() {
    addMouseListener(this);
    setSize(600,700);
    setVisible(true);
    setDefaultCloSEOperation(EXIT_ON_CLOSE);
}

public void paint(Graphics g) {
    super.paint(g);
    Graphics2D Circle = (Graphics2D)g;
    Circle.setstroke(new Basicstroke(10.f));
    Circle.setColor(Color.black);
    radius = 100;
    diameter = radius * 2 ;
    Circle.drawoval(200,300,(int) diameter,(int) diameter);
}
public static void main(String[] args) {
    new DrawCircle();
}


@Override
public void mouseClicked(MouseEvent e ) {
Graphics g = getGraphics();
if (e.getButton()==MouseEvent.BUTTON1) {
    g.setColor(Color.black);
    g.drawoval(e.getX(),e.getY(),5,5);
}

    }