Example usage for java.awt.event ItemListener ItemListener

Introduction

In this page you can find the example usage for java.awt.event ItemListener ItemListener.

Prototype

ItemListener

Source Link

Usage

From source file:Main.java

public static void main(String[] args) {
    AbstractButton jb = new JButton("Press Me");

    jb.addItemListener(new ItemListener() {
        public void itemStateChanged(ItemEvent ev) {
            System.out.println("ItemEvent!");
        }//from ww  w  .  j ava 2s.com
    });
    ItemListener[] lis = jb.getItemListeners();
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(jb);
    f.pack();
    f.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    JComboBox<String> box = new JComboBox<>();
    box.addItem("One");
    box.addItem("Two");
    box.addItem("Three");

    box.addItemListener(new ItemListener() {
        public void itemStateChanged(ItemEvent e) {
            if (e.getStateChange() == ItemEvent.SELECTED) {
                System.out.println(e.getItem());
            }//from  ww w .j a  va  2  s .c o m
        }
    });
    JFrame frame = new JFrame();
    frame.getContentPane().add(box);
    frame.pack();
    frame.setVisible(true);
}

From source file:MainClass.java

public static void main(String[] args) {
    JButton jb = new JButton("Press Me");

    jb.addItemListener(new ItemListener() {
        public void itemStateChanged(ItemEvent ev) {
            System.out.println("ItemEvent!");
        }/*  ww  w.  j  a  va 2s .com*/
    });

    jb.addChangeListener(new ChangeListener() {
        public void stateChanged(ChangeEvent ev) {
            System.out.println("ChangeEvent!");
        }
    });

    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(jb);
    f.pack();
    f.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    AbstractButton jb = new JButton("Press Me");

    jb.addItemListener(new ItemListener() {
        public void itemStateChanged(ItemEvent ev) {
            System.out.println("ItemEvent!");
        }//  www.j a v  a2  s .c  om
    });

    jb.addChangeListener(new ChangeListener() {
        public void stateChanged(ChangeEvent ev) {
            System.out.println("ChangeEvent!");
        }
    });

    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(jb);
    f.pack();
    f.setVisible(true);
}

From source file:Main.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Selecting Toggle");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JToggleButton toggleButton = new JToggleButton("Toggle Button");

    ItemListener itemListener = new ItemListener() {
        public void itemStateChanged(ItemEvent itemEvent) {
            int state = itemEvent.getStateChange();
            if (state == ItemEvent.SELECTED) {
                System.out.println("Selected");
            } else {
                System.out.println("Deselected");
            }/*from ww w.  j  ava2 s  .c om*/
        }
    };
    // Attach Listeners
    toggleButton.addItemListener(itemListener);
    frame.add(toggleButton, BorderLayout.NORTH);
    frame.setSize(300, 125);
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Iconizing CheckBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JCheckBox aCheckBox4 = new JCheckBox("Stuffed Crust");

    ItemListener itemListener = new ItemListener() {
        public void itemStateChanged(ItemEvent itemEvent) {
            AbstractButton abstractButton = (AbstractButton) itemEvent.getSource();
            Color foreground = abstractButton.getForeground();
            Color background = abstractButton.getBackground();
            int state = itemEvent.getStateChange();
            if (state == ItemEvent.SELECTED) {
                abstractButton.setForeground(background);
                abstractButton.setBackground(foreground);
            }/*from  w  ww. j  av a2  s . co m*/
        }
    };
    aCheckBox4.addItemListener(itemListener);
    frame.add(aCheckBox4);
    frame.setSize(300, 200);
    frame.setVisible(true);
}

From source file:Main.java

public static void main(final String args[]) {
    final String labels[] = { "A", "B", "C", "D", "E" };
    JFrame frame = new JFrame("Selecting JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JComboBox comboBox = new JComboBox(labels);
    frame.add(comboBox, BorderLayout.SOUTH);

    ItemListener itemListener = new ItemListener() {
        public void itemStateChanged(ItemEvent itemEvent) {
            int state = itemEvent.getStateChange();
            String stateString = ((state == ItemEvent.SELECTED) ? "Selected" : "Deselected");
            System.out.println("Item: " + itemEvent.getItem());
            System.out.println(", State: " + stateString);
            ItemSelectable is = itemEvent.getItemSelectable();
            System.out.println(", Selected: " + selectedString(is));
        }// ww  w. j av a  2 s.  c om
    };
    comboBox.addItemListener(itemListener);
    frame.setSize(400, 200);
    frame.setVisible(true);

}

From source file:ItemTest.java

public static void main(String args[]) {
    JFrame frame = new JFrame();
    Container contentPane = frame.getContentPane();

    ItemListener listener = new ItemListener() {
        public void itemStateChanged(ItemEvent e) {
            System.out.println("Source: " + name(e.getSource()));
            System.out.println("Item: " + name(e.getItem()));
            int state = e.getStateChange();
            System.out.println("State: " + ((state == ItemEvent.SELECTED) ? "Selected" : "Deselected"));
        }// ww w . jav a 2  s  .com

        private String name(Object o) {
            if (o instanceof JComponent) {
                JComponent comp = (JComponent) o;
                return comp.getName();
            } else {
                return o.toString();
            }
        }
    };

    JPanel panel = new JPanel(new GridLayout(0, 1));
    ButtonGroup group = new ButtonGroup();
    JRadioButton option = new JRadioButton("French Fries", true);
    option.setName(option.getText());
    option.addItemListener(listener);
    group.add(option);
    panel.add(option);
    option = new JRadioButton("Onion Rings", false);
    option.setName(option.getText());
    option.addItemListener(listener);
    group.add(option);
    panel.add(option);
    option = new JRadioButton("Ice Cream", false);
    option.setName(option.getText());
    option.addItemListener(listener);
    group.add(option);
    panel.add(option);
    contentPane.add(panel, BorderLayout.NORTH);

    String flavors[] = { "Item 1", "Item 2", "Item 3" };
    JComboBox jc = new JComboBox(flavors);
    jc.setName("Combo");
    jc.addItemListener(listener);
    jc.setMaximumRowCount(4);
    contentPane.add(jc, BorderLayout.SOUTH);

    frame.pack();
    frame.show();
}

From source file:Main.java

public static void main(String[] args) {
    String items[] = { "Item1", "item1" };
    JFrame f = new JFrame();
    JPanel panel = new JPanel();
    JComboBox<String> combo = new JComboBox<>(items);
    combo.setEditable(true);//from   w w w.j a va2s  . co m

    JTextField txt = new JTextField(10);
    panel.add(combo);
    panel.add(txt);
    f.add(panel);
    combo.addItemListener(new ItemListener() {
        @Override
        public void itemStateChanged(ItemEvent ie) {
            String str = (String) combo.getSelectedItem();
            txt.setText(str);
        }
    });
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setSize(400, 100);
    f.setVisible(true);
}

From source file:JRadioButtonItemListener.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Grouping Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel panel = new JPanel(new GridLayout(0, 1));

    ButtonGroup group = new ButtonGroup();
    JRadioButton aRadioButton = new JRadioButton("A");
    JRadioButton bRadioButton = new JRadioButton("B");

    ItemListener itemListener = new ItemListener() {
        String lastSelected;/*from w  ww  .  ja  va  2  s  .  c  o  m*/

        public void itemStateChanged(ItemEvent itemEvent) {
            AbstractButton aButton = (AbstractButton) itemEvent.getSource();
            int state = itemEvent.getStateChange();
            String label = aButton.getText();
            String msgStart;
            if (state == ItemEvent.SELECTED) {
                if (label.equals(lastSelected)) {
                    msgStart = "Reselected -> ";
                } else {
                    msgStart = "Selected -> ";
                }
                lastSelected = label;
            } else {
                msgStart = "Deselected -> ";
            }
            System.out.println(msgStart + label);
        }
    };

    panel.add(aRadioButton);
    group.add(aRadioButton);
    panel.add(bRadioButton);
    group.add(bRadioButton);

    aRadioButton.addItemListener(itemListener);
    bRadioButton.addItemListener(itemListener);

    frame.add(panel);
    frame.setSize(300, 200);
    frame.setVisible(true);
}