TP 2 - LIPN
import java.awt.*;. import javax.swing.*;. public class Dessin extends JFrame {.
public static void main(String args[]) {. Panneau panel;. Dessin fenetre = new
Dessin();. Toolkit tlk = fenetre.getToolkit();. Dimension dim = tlk.getScreenSize();.
fenetre.setBounds(dim.width/4, dim.height/4,. dim.width/2, dim.height/2);. fenetre.
part of the document
C. Recanati
Java Graphique
AIR2, 2015
Eléments pour la feuille de TP n° 1
Exercice 1
import java.awt.*;
import javax.swing.*;
public class Dessin extends JFrame {
public static void main(String args[]) {
Panneau panel;
Dessin fenetre = new Dessin();
Toolkit tlk = fenetre.getToolkit();
Dimension dim = tlk.getScreenSize();
fenetre.setBounds(dim.width/4, dim.height/4,
dim.width/2, dim.height/2);
fenetre.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel = new Panneau();
fenetre.getContentPane().add(panel, BorderLayout.CENTER);
fenetre.setVisible(true);
}
}
class Panneau extends JPanel {
public void paintComponent(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
Stroke stk = new BasicStroke(5); // épaisseur de ligne
super.paintComponent(g);
setBackground(Color.white); //fond du panneau
g2d.setColor(Color.red); // pour dessiner
g2d.setStroke(stk); // pour épaisseur de ligne
g2d.drawLine(0,0, 100, 150);
g2d.setColor(Color.blue);
Font f = new Font ("Serif", Font.BOLD, 36);
g2d.setFont(f);
g2d.drawString( "UNE CHAINE", 50,50);
g2d.setColor(Color.green);
g2d.drawRect(10, 10, 90, 200);
}
}
Exercice 2
1) public interface Constantes {
public static final int ROND = 1;
public static final int CROIX = 2;
public static final int POLY = 3;
public static final int defaultMode = rond;
}
public class Test implements Constantes {
protected static int mode = defaultMode; // ou ROND
public static void main (String [ ] args) {
System.out.println ("le mode est" + mode) ;
}
}
2)
import java.util.*;
import java.awt.*;
public class Test2 implements Constantes {
Vector ensPts ; // stocke les points à afficher
int mode;
private void init(int i) {
mode=i;
ensPts = new Vector();
}
public Test2(int i) {
this.init(i);
}
public Test2() {
this.init(defaultMode);
}
public void initAlea(int nb, int larg, int haut) {
for (int i=0; i modeMax)
throw new Exception("mode " + i +" incorrect");
this.init(i);
Container content = getContentPane();
pane = new MonJPanel();
content.add(pane, BorderLayout.CENTER);
}
public Dessin(String titre) {
super(titre);
this.init(rond);
Container content = getContentPane();
pane = new MonJPanel();
content.add(pane, BorderLayout.CENTER);
}
public class MonJPanel extends JPanel {
public void paintComponent(Graphics g) {
super.paintComponent(g) ;
g.setPaint(Color.red);
int nbPoints = ensPts.size();
int[] abs = new int[nbPoints];
int[] ords = new int[nbPoints];
for(int i=0; i
