java画图Graphics

import com.sun.webkit.dom.MouseEventImpl;

import javax.swing.*;
import java.awt.*;

class Windows extends JFrame {

    public static void main(String[] args) {

        Windows windows=new Windows();
        windows.initWindow();

    }

public  void initWindow(){
        this.setTitle("Graphic test!!!");
        this.setSize(800,800);
        this.setLocation(0,0);
        this.setVisible(true);
}

    @Override
    public void paint(Graphics g) {
        super.paint(g);
        int x=1,y=1,m=1,n=1;
        for(int i=1;i<100;i++){
            x=i*10;y=(int)(Math.sin(x)*500);
            System.out.println(x+":"+y+":"+m+":"+n);
            g.drawLine(m,n,x,y);
            m=x;n=y;
        }
    }

    public static void drawLine(){

    }
}