JRadioButton birdButton = new JRadioButton(birdString); birdButton.setMnemonic(KeyEvent.VK_B); birdButton.setActionCommand(birdString); birdButton.setSelected(true); JRadioButton catButton = new JRadioButton(catString); catButton.setMnemonic(KeyEvent.VK_C); catButton.setActionCommand(catString); JRadioButton dogButton = new JRadioButton(dogString); dogButton.setMnemonic(KeyEvent.VK_D); dogButton.setActionCommand(dogString); JRadioButton rabbitButton = new JRadioButton(rabbitString); rabbitButton.setMnemonic(KeyEvent.VK_R); rabbitButton.setActionCommand(rabbitString); JRadioButton pigButton = new JRadioButton(pigString); pigButton.setMnemonic(KeyEvent.VK_P); pigButton.setActionCommand(pigString); //Group the radio buttons. ButtonGroup group = new ButtonGroup(); group.add(birdButton); group.add(catButton); group.add(dogButton); group.add(rabbitButton); group.add(pigButton); //Register a listener for the radio buttons. birdButton.addActionListener(this); catButton.addActionListener(this); dogButton.addActionListener(this); rabbitButton.addActionListener(this); pigButton.addActionListener(this); ... public void actionPerformed(ActionEvent e) { picture.setIcon(new ImageIcon("images/" + e.getActionCommand() + ".gif")); }
chinButton = new JCheckBox("Chin"); chinButton.setMnemonic(KeyEvent.VK_C); chinButton.setSelected(true); glassesButton = new JCheckBox("Glasses"); glassesButton.setMnemonic(KeyEvent.VK_G); glassesButton.setSelected(true); hairButton = new JCheckBox("Hair"); hairButton.setMnemonic(KeyEvent.VK_H); hairButton.setSelected(true); teethButton = new JCheckBox("Teeth"); teethButton.setMnemonic(KeyEvent.VK_T); teethButton.setSelected(true); //Register a listener for the check boxes. chinButton.addItemListener(this); glassesButton.addItemListener(this); hairButton.addItemListener(this); teethButton.addItemListener(this); ... public void itemStateChanged(ItemEvent e) { ... Object source = e.getItemSelectable(); if (source == chinButton) { //...make a note of it... } else if (source == glassesButton) { //...make a note of it... } else if (source == hairButton) { //...make a note of it... } else if (source == teethButton) { //...make a note of it... } if (e.getStateChange() == ItemEvent.DESELECTED) //...make a note of it... ... updatePicture(); }
birdButton.setMnemonic(KeyEvent.VK_B);
birdButton.setActionCommand(birdString);
birdButton.setSelected(true); JRadioButton catButton = new JRadioButton(catString);
catButton.setMnemonic(KeyEvent.VK_C);
catButton.setActionCommand(catString); JRadioButton dogButton = new JRadioButton(dogString);
dogButton.setMnemonic(KeyEvent.VK_D);
dogButton.setActionCommand(dogString); JRadioButton rabbitButton = new JRadioButton(rabbitString);
rabbitButton.setMnemonic(KeyEvent.VK_R);
rabbitButton.setActionCommand(rabbitString); JRadioButton pigButton = new JRadioButton(pigString);
pigButton.setMnemonic(KeyEvent.VK_P);
pigButton.setActionCommand(pigString); //Group the radio buttons.
ButtonGroup group = new ButtonGroup();
group.add(birdButton);
group.add(catButton);
group.add(dogButton);
group.add(rabbitButton);
group.add(pigButton); //Register a listener for the radio buttons.
birdButton.addActionListener(this);
catButton.addActionListener(this);
dogButton.addActionListener(this);
rabbitButton.addActionListener(this);
pigButton.addActionListener(this);
...
public void actionPerformed(ActionEvent e) {
picture.setIcon(new ImageIcon("images/"
+ e.getActionCommand()
+ ".gif"));
}
chinButton.setMnemonic(KeyEvent.VK_C);
chinButton.setSelected(true); glassesButton = new JCheckBox("Glasses");
glassesButton.setMnemonic(KeyEvent.VK_G);
glassesButton.setSelected(true); hairButton = new JCheckBox("Hair");
hairButton.setMnemonic(KeyEvent.VK_H);
hairButton.setSelected(true); teethButton = new JCheckBox("Teeth");
teethButton.setMnemonic(KeyEvent.VK_T);
teethButton.setSelected(true); //Register a listener for the check boxes.
chinButton.addItemListener(this);
glassesButton.addItemListener(this);
hairButton.addItemListener(this);
teethButton.addItemListener(this);
...
public void itemStateChanged(ItemEvent e) {
...
Object source = e.getItemSelectable(); if (source == chinButton) {
//...make a note of it...
} else if (source == glassesButton) {
//...make a note of it...
} else if (source == hairButton) {
//...make a note of it...
} else if (source == teethButton) {
//...make a note of it...
} if (e.getStateChange() == ItemEvent.DESELECTED)
//...make a note of it...
...
updatePicture();
}