为什么g2.draw(new Point2D.Double(180,180)不能通过编译啊？

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;/**
主类
**/
public class Ensample1
{
public static void main(String[] args)
{
Ensample1Frame aFrame = new Ensample1Frame();           //创建框架类
aFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  //关闭窗口
aFrame.setVisible(true);                                //显示窗口
}
}class Ensample1Frame extends JFrame                        //框架类
{
public Ensample1Frame()
{
Toolkit kit = Toolkit.getDefaultToolkit();            //Toolkit与系统有关       
Dimension screenSize = kit.getScreenSize();           //获得系统屏幕大小
int screenWidth = screenSize.width;                   //获得系统屏幕宽
int screenHeight = screenSize.height;                 //获得系统屏幕高

setTitle("例子1");                                   //标题
setSize(screenWidth / 4,screenHeight / 4);           //框架大小
setLocation(screenWidth /2,screenHeight / 2);        //框架在桌面显示位置
setResizable(false);                                 //框架是否改变大小，false为不可改变

Image img = kit.getImage("Icon.gif");                //使用工具箱加载图像
setIconImage(img);  //框架的图标

Ensample1Panel aPanel = new Ensample1Panel();        //创建面板类
add(aPanel);                                         //将面板添加到框架内
}
}class Ensample1Panel extends JPanel                      //面板类
{
public void paintComponent(Graphics g)                 //绘图必须覆盖此方法
{
super.paintComponent(g);

g.drawString("*我的名字叫楚境书生。*",0,15);          //面板上绘制字符

Graphics2D g2 = (Graphics2D)g;                        //绘制2D必须

    for(int i = 50;i <= 100;i = i + 10)                   
     g.drawOval(50, i, 0, 0);                           //绘制点
    
    Point2D p = new Point2D.Double(180,180);
    g2.draw(p);

Point2D p1 = new Point2D.Double(50,50);              //创建点
Point2D p2 = new Point2D.Double(0,50);               //创建点

Line2D l = new Line2D.Double(p2,p1);                 //创建直线
g2.draw(l);                                          //绘制直线

}
}F:\Java\ensample1>javac Ensample1.java
Ensample1.java:60: 无法将 java.awt.Graphics2D 中的 draw(java.awt.Shape) 应用于 (
java.awt.geom.Point2D)
    g2.draw(p);
      ^
1 错误