如何绘制一个在窗口大小改变时调整大小的行？

Question

我正在尝试制作图形的x轴和y轴，当窗口大小发生变化时，该轴可以自动调整大小This is my code, I'm trying to use addComponentlistener to help resize the axis but it doesn't work. I guess it have to do with graphics g is inside another anonymous class, but I'm not sure how to fix it. (I'm noob)

 display = new JPanel(){


        @Override
        public void paintComponent(Graphics g)
        {   
            Graphics2D g2d = (Graphics2D) g;
            addComponentListener(new ComponentAdapter(){
                public void componentResized(ComponentEvent e){
                    Component c = (Component)e.getSource();
                    int x1 = c.getWidth()/8;
                    int y1 = c.getHeight()/4;
                    int x2 = c.getWidth()*7/8;
                    int y2 = c.getHeight()/4;

                    g.drawLine(10,100,100,100 );

                }});


        }
    };