Dessiner un segment

package outils;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.util.Scanner;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class PanneauDessin2D extends JPanel {
 private Point p = null;
 private int methode;
 private int r;
 
 public PanneauDessin2D(){
  
  super();
 }
 public void paintComponent(Point p, int r, Graphics g)
 {
  
  super.paintComponent(g);
  g.setColor(Color.white);
  g.fillRect(0, 0, this.getWidth(), this.getHeight());
  g.setColor(Color.BLACK);
  g.drawRect(0, 0, this.getWidth(), this.getHeight());
  g.setColor(Color.red);
  g.drawLine(0, this.getHeight()/2, this.getWidth(), this.getHeight()/2);
  g.drawLine(this.getWidth()/2, 0, this.getWidth()/2, this.getHeight());
  g.setColor(Color.BLACK);
  g.drawString("Y", this.getWidth()/2 + 10,20);
  g.drawString("X", this.getWidth() - 20,this.getHeight()/2 - 10);
  
  g.setColor(Color.BLUE);
  
  draw(p , r, g);
  
  
 }
 
 private void draw(Point p, int r, Graphics g)
 {
  
  switch (methode)
  {
    case 1:
  
     Cercle.cercleBresenham(p, r, g);
     break;
    case 2:
     Cercle.cerclePolynomiale(p, r, g);
      break;
    case 3:
     Cercle.cercleTrigonometrique(p, r, g);
      break;
    default:
      System.out.println("vous avez saisi une mauvaise valeur!");
  }   
     
   }
   
  
 public Point getP() 
 {
  return p;
 }

 public void setP(Point p) 
 {
  this.p = p;
 }

 public int getr() 
 {
  return r;
 }

 public void setR(int r) 
 {
  this.r = r;
 }

 public int getMethode() 
 {
  return methode;
 } 
 public void setMethode(int methode) 
 {
  this.methode = methode;
 }

}

 package outils;

import java.awt.Container;
import java.awt.Point;
import java.util.Scanner;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Fenetre extends JFrame{
 
 public Fenetre(){
  super();
  ProprietesFenetre();
 }

 public void ProprietesFenetre(){
  Point p = new Point();
  JFrame window = new JFrame();
  window.setSize(640,430);
  window.setVisible(true);
  window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  System.out.println("donnez la valeur x de centre ");
  Scanner sc = new Scanner(System.in);
   int x= sc.nextInt();
  
  p.x=x;
  System.out.println("donnez la valeur y de centre ");
  int y= sc.nextInt();
  p.y=y;
  
  System.out.println("donnez la valeur r de rayon ");
  int r= sc.nextInt();
  
  System.out.println("choisir une méthode pour dessiner une cercle: ");
  System.out.println("1- Bresenham ");
  System.out.println("2- Polynomiale ");
  System.out.println("3- Trigonometrique ");
  Scanner choix = new Scanner(System.in);
  int methode = choix.nextInt();
  
  
 
  PanneauDessin2D PD = new PanneauDessin2D();
         PD.setMethode(methode);
  PD.setP(p);
  PD.setR(r);
  window.getContentPane().add(PD);
  
  

 }
 }

 package outils;

import java.awt.Point;
import java.util.Scanner;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main {

 public static void main(String[] args) {
  
  Fenetre fenetre = new Fenetre();
  
 }

}