Example usage for javax.swing JComboBox addActionListener

Introduction

In this page you can find the example usage for javax.swing JComboBox addActionListener.

Prototype

public void addActionListener(ActionListener l) 

Source Link

Document

Adds an ActionListener.

Usage

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);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            System.out.println("Command: " + actionEvent.getActionCommand());
            ItemSelectable is = (ItemSelectable) actionEvent.getSource();
            System.out.println(", Selected: " + selectedString(is));
        }//from w ww.  j  a v  a  2  s. c om
    };
    comboBox.addActionListener(actionListener);
    frame.setSize(400, 200);
    frame.setVisible(true);

}

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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);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            System.out.println("Command: " + actionEvent.getActionCommand());
            ItemSelectable is = (ItemSelectable) actionEvent.getSource();
            System.out.println(", Selected: " + selectedString(is));
        }//ww  w.j ava  2  s . c  om
    };
    comboBox.addActionListener(actionListener);
    comboBox.removeActionListener(actionListener);
    frame.setSize(400, 200);
    frame.setVisible(true);

}

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From source file:Main.java

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

    final JComboBox comboBox = new JComboBox(labels);
    comboBox.setMaximumRowCount(5);/*from  www.  j  av a2s.  co  m*/
    comboBox.setEditable(true);
    frame.add(comboBox, BorderLayout.NORTH);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            System.out.println("Selected: " + comboBox.getSelectedItem());
            System.out.println(", Position: " + comboBox.getSelectedIndex());
        }
    };
    comboBox.addActionListener(actionListener);

    frame.setSize(300, 200);
    frame.setVisible(true);

}

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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);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            System.out.println("Command: " + actionEvent.getActionCommand());
            ItemSelectable is = (ItemSelectable) actionEvent.getSource();
            System.out.println(", Selected: " + selectedString(is));
            System.out.println("paramString:" + actionEvent.paramString());
        }//from  w  w w  . ja  va2  s . c om
    };
    comboBox.addActionListener(actionListener);
    frame.setSize(400, 200);
    frame.setVisible(true);

}

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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);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            System.out.println("Command: " + actionEvent.getActionCommand());
            ItemSelectable is = (ItemSelectable) actionEvent.getSource();
            System.out.println(", Selected: " + selectedString(is));
            System.out.println(", Selected: " + new Date(actionEvent.getWhen()));
        }//from  www.j a  v  a  2  s . c  om
    };
    comboBox.addActionListener(actionListener);
    frame.setSize(400, 200);
    frame.setVisible(true);

}

---

From source file:Main.java

public static void main(String args[]) throws Exception {
    Color colors[] = { Color.GREEN, Color.ORANGE, Color.PINK, Color.RED, Color.WHITE, Color.YELLOW };
    JFrame frame = new JFrame("Color JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    final JComboBox comboBox = new JComboBox(colors);
    comboBox.setMaximumRowCount(5);/*from   w w w .  j ava 2 s .c  o m*/
    comboBox.setEditable(true);
    comboBox.setRenderer(new ColorCellRenderer());
    frame.add(comboBox, BorderLayout.NORTH);

    final JLabel label = new JLabel();
    label.setOpaque(true);
    label.setBackground((Color) comboBox.getSelectedItem());
    frame.add(label, BorderLayout.CENTER);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            Color selectedColor = (Color) comboBox.getSelectedItem();
            label.setBackground(selectedColor);
        }
    };
    comboBox.addActionListener(actionListener);

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

---

From source file:EditComboBox.java

public static void main(String args[]) {
    String labels[] = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J" };
    JFrame frame = new JFrame("Editable JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    final JComboBox comboBox = new JComboBox(labels);
    comboBox.setMaximumRowCount(5);/*from  w ww.  j a  v a  2s.c  o m*/
    comboBox.setEditable(true);
    contentPane.add(comboBox, BorderLayout.NORTH);

    final JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);
    contentPane.add(scrollPane, BorderLayout.CENTER);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            textArea.append("Selected: " + comboBox.getSelectedItem());
            textArea.append(", Position: " + comboBox.getSelectedIndex());
            textArea.append(System.getProperty("line.separator"));
        }
    };
    comboBox.addActionListener(actionListener);

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

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From source file:DateTimeEditor.java

public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent evt) {
            System.exit(0);/*  w ww . jav a  2s  . co  m*/
        }
    });

    JPanel panel = new JPanel(new BorderLayout());
    panel.setBorder(new EmptyBorder(5, 5, 5, 5));
    frame.setContentPane(panel);
    final DateTimeEditor field = new DateTimeEditor(DateTimeEditor.DATETIME, DateFormat.FULL);
    panel.add(field, "North");

    JPanel buttonBox = new JPanel(new GridLayout(2, 2));
    JButton showDateButton = new JButton("Show Date");
    buttonBox.add(showDateButton);

    final JComboBox timeDateChoice = new JComboBox();
    timeDateChoice.addItem("Time");
    timeDateChoice.addItem("Date");
    timeDateChoice.addItem("Date/Time");
    timeDateChoice.setSelectedIndex(2);
    timeDateChoice.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
            field.setTimeOrDateType(timeDateChoice.getSelectedIndex());
        }
    });
    buttonBox.add(timeDateChoice);

    JButton toggleButton = new JButton("Toggle Enable");
    buttonBox.add(toggleButton);
    showDateButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
            System.out.println(field.getDate());
        }
    });
    toggleButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
            field.setEnabled(!field.isEnabled());
        }
    });
    panel.add(buttonBox, "South");

    final JComboBox lengthStyleChoice = new JComboBox();
    lengthStyleChoice.addItem("Full");
    lengthStyleChoice.addItem("Long");
    lengthStyleChoice.addItem("Medium");
    lengthStyleChoice.addItem("Short");
    lengthStyleChoice.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
            field.setLengthStyle(lengthStyleChoice.getSelectedIndex());
        }
    });
    buttonBox.add(lengthStyleChoice);

    frame.pack();
    Dimension dim = frame.getToolkit().getScreenSize();
    frame.setLocation(dim.width / 2 - frame.getWidth() / 2, dim.height / 2 - frame.getHeight() / 2);
    frame.show();
}

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From source file:Main.java

public static void main(String[] args) {
    ScriptEngine engine = new ScriptEngineManager().getEngineByExtension("js");

    String[] ops = { "+", "-", "*", "/" };

    JPanel gui = new JPanel(new BorderLayout(2, 2));
    JPanel labels = new JPanel(new GridLayout(0, 1));
    gui.add(labels, BorderLayout.WEST);
    labels.add(new JLabel("a"));
    labels.add(new JLabel("operand"));
    labels.add(new JLabel("b"));
    labels.add(new JLabel("="));

    JPanel controls = new JPanel(new GridLayout(0, 1));
    gui.add(controls, BorderLayout.CENTER);
    JTextField a = new JTextField(10);
    controls.add(a);/*  w w w  .java 2s . c o m*/
    JComboBox operand = new JComboBox(ops);
    controls.add(operand);
    JTextField b = new JTextField(10);
    controls.add(b);
    JTextField output = new JTextField(10);
    controls.add(output);

    ActionListener al = new ActionListener() {
        public void actionPerformed(ActionEvent ae) {
            String expression = a.getText() + operand.getSelectedItem() + b.getText();
            try {
                Object result = engine.eval(expression);
                if (result == null) {
                    output.setText("Output was 'null'");
                } else {
                    output.setText(result.toString());
                }
            } catch (ScriptException se) {
                output.setText(se.getMessage());
            }
        }
    };

    operand.addActionListener(al);
    a.addActionListener(al);
    b.addActionListener(al);

    JOptionPane.showMessageDialog(null, gui);
}

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From source file:ColorComboBox.java

public static void main(String args[]) {
    Color colors[] = { Color.black, Color.blue, Color.cyan, Color.darkGray, Color.gray, Color.green,
            Color.lightGray, Color.magenta, Color.orange, Color.pink, Color.red, Color.white, Color.yellow };
    JFrame frame = new JFrame("Color JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    final JComboBox comboBox = new JComboBox(colors);
    comboBox.setMaximumRowCount(5);//from www .jav a 2  s  .  c om
    comboBox.setEditable(true);
    comboBox.setRenderer(new ColorCellRenderer());
    Color color = (Color) comboBox.getSelectedItem();
    ComboBoxEditor editor = new ColorComboBoxEditor(color);
    comboBox.setEditor(editor);
    contentPane.add(comboBox, BorderLayout.NORTH);

    final JLabel label = new JLabel();
    label.setOpaque(true);
    label.setBackground((Color) comboBox.getSelectedItem());
    contentPane.add(label, BorderLayout.CENTER);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            Color selectedColor = (Color) comboBox.getSelectedItem();
            label.setBackground(selectedColor);
        }
    };
    comboBox.addActionListener(actionListener);

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

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