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Essayer de faire cette applet simple - la première partie crée juste un simple GUI où l'utilisateur sélectionne le nombre, la forme et la couleur ... puis quand ils soumettent qu'il charge une autre applet qui prend cette information et crée autant de formes dans cette couleur. Assez simple, sauf que cela ne fonctionne pas - la deuxième applet est juste vide. Ne fait pas partie d'un site Web, essayant simplement de le faire fonctionner dans Netbeans.Java Applet ne crée pas de formes
La première partie qui crée l'IUG
public class NewJApplet extends javax.swing.JApplet {
/** Initializes the applet NewJApplet */
public void init() {
try {
java.awt.EventQueue.invokeAndWait(new Runnable() {
public void run() {
initComponents();
}
});
} catch (Exception ex) {
ex.printStackTrace();
}
}
/** This method is called from within the init() method to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jComboBox1 = new javax.swing.JComboBox();
jComboBox2 = new javax.swing.JComboBox();
jComboBox3 = new javax.swing.JComboBox();
jButton1 = new javax.swing.JButton();
jLabel1.setText("Number of Figures");
jLabel2.setText("Type of Figure");
jLabel3.setText("Color of Figure");
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "1", "2", "4", "8", "16" }));
jComboBox1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jComboBox1ActionPerformed(evt);
}
});
jComboBox2.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Circle", "Oval", "Rectangle", "Square" }));
jComboBox3.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Red", "Blue", "Green", "Yellow", "Pink", "Black", "Cyan", "Magenta" }));
jButton1.setText("Draw");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(184, 184, 184)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addGroup(layout.createSequentialGroup()
.addGap(20, 20, 20)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(55, 55, 55)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jButton1)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(51, 51, 51)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jComboBox3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))))
.addContainerGap(192, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(54, 54, 54)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2)
.addGap(18, 18, 18)
.addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel3)
.addGap(18, 18, 18)
.addComponent(jComboBox3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(54, 54, 54)
.addComponent(jButton1)
.addContainerGap(289, Short.MAX_VALUE))
);
}// </editor-fold>
private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
new DrawApplet().setVisible(true);
setVisible(false);
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
public static javax.swing.JComboBox jComboBox1;
public static javax.swing.JComboBox jComboBox2;
public static javax.swing.JComboBox jComboBox3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
// End of variables declaration
}
La deuxième partie qui est censé faire le dessin ...
import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;
import java.io.*;
/**
*
* @author Jason
*/
public class DrawApplet extends Applet {
public void paint(Graphics g) {
int size = 200;
int i = 0;
int x;
int y;
int width;
int height;
int shapeInt;
String number = (String)NewJApplet.jComboBox1.getSelectedItem();
int numberInt = Integer.parseInt(number);
String shape = (String)NewJApplet.jComboBox2.getSelectedItem();
String color = (String)NewJApplet.jComboBox3.getSelectedItem();
for (i = 0; i < numberInt; i++) {
if (color.equals("red")) {
g.setColor(Color.red);
} else if (color.equals("blue")) {
g.setColor(Color.blue);
} else if (color.equals("green")) {
g.setColor(Color.green);
} else if (color.equals("yello")) {
g.setColor(Color.yellow);
} else if (color.equals("pink")) {
g.setColor(Color.pink);
} else if (color.equals("black")) {
g.setColor(Color.black);
} else if (color.equals("cyan")) {
g.setColor(Color.cyan);
} else {
g.setColor(Color.magenta);
}
x = (int)(Math.random() * size);
y = (int)(Math.random() * size);
width = (int)(Math.random() * size);
height = (int)(Math.random() * size);
if (shape.equals("circle")) {
shapeInt = 1;
} else if (shape.equals("oval")) {
shapeInt = 2;
} else if (shape.equals("rectangle")) {
shapeInt = 3;
} else {
shapeInt = 4;
}
switch (shapeInt) {
case 1:
g.fillOval(x, y, width, height);
break;
case 2:
g.fillOval(x, y, width, height);
break;
case 3:
g.fillRect(x, y, width, height);
break;
case 4:
g.fillRect(x, y, width, height);
break;
}
}
}
}