Example usage for javax.swing JComboBox JComboBox

Introduction

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

Prototype

public JComboBox(Vector<E> items)

Source Link

Document

Creates a JComboBox that contains the elements in the specified Vector.

Usage

From source file:Main.java

public static void main(String[] args) {
    Integer[] numbers = { 1, 2, 3 };
    String[] names = { "A", "B", "C" };
    JComboBox numberCombo = new JComboBox(numbers);
    JComboBox nameCombo = new JComboBox(names);
    JPanel p = new JPanel(new GridLayout(0, 1, 3, 3));
    p.add(numberCombo);/*  w  w  w.  j  a v  a  2 s  . com*/
    p.add(nameCombo);

    JOptionPane.showMessageDialog(null, p);

    Integer chosenNumber = (Integer) numberCombo.getSelectedItem();
    System.out.println("Chosen Number: " + chosenNumber);
    String chosenName = (String) nameCombo.getSelectedItem();
    System.out.println("Chosen Name: " + chosenName);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Object[] options = { "Option 1", "Option 2", "Option 3", "Option 4", "Option 5", "Option 6", "Option 7",
            "None of the above" };
    JComboBox optionList = new JComboBox(options);
    optionList.setSelectedIndex(7);/*w  w w .  j a  v a 2s.c  o  m*/
    JOptionPane.showMessageDialog(null, optionList, "Title", JOptionPane.QUESTION_MESSAGE);
}

From source file:Main.java

public static void main(String[] args) {
    JComboBox<String> comboBox = new JComboBox<>(new String[] { "A", "B", "C" });
    comboBox.setEditable(true);//  w w w .  j a v  a  2s . c o  m

    JTextField editorComponent = (JTextField) comboBox.getEditor().getEditorComponent();
    editorComponent.addActionListener(e -> {
        editorComponent.transferFocus();
    });

    JPanel panel = new JPanel(new FlowLayout());
    panel.add(new JLabel("Field 1"));
    panel.add(comboBox);
    panel.add(new JLabel("Field 2"));
    panel.add(new JTextField(10));
    panel.add(new JLabel("Field 3"));
    panel.add(new JTextField(10));

    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setLocationRelativeTo(null);

    Container c = frame.getContentPane();
    c.setLayout(new BorderLayout());
    c.add(panel, BorderLayout.CENTER);
    frame.pack();
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JComboBox<String> comboBox = new JComboBox<>(new String[] { "Something", "Stuff", "Beep" });
    JButton add = new JButton("Add item");
    add.addActionListener(new ActionListener() {

        @Override//from  www .  j a  v  a2 s .co  m
        public void actionPerformed(ActionEvent e) {
            comboBox.addItem("Item");
        }
    });
    frame.add(comboBox);
    frame.add(add, BorderLayout.SOUTH);
    frame.pack();
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setSize(400, 400);//w  w w  .  j  a  v a 2s .  co m
    frame.setVisible(true);
    String[] list = { "1", "2", "3", "4", };
    JComboBox<String> comb = new JComboBox<>(list);
    final JPopupMenu pop = new JPopupMenu();
    pop.add(comb);
    frame.addMouseListener(new MouseAdapter() {

        @Override
        public void mousePressed(MouseEvent e) {
            System.out.println("mousePressed");
            pop.show(e.getComponent(), e.getX(), e.getY());
        }
    });
}

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);//  ww w. j  a v  a2s .c  o  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:Main.java

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

    String labels[] = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J" };
    JComboBox<String> comboBox = new JComboBox<>(labels);
    comboBox.setEditable(true);//  w  w w.j ava  2  s. com

    comboBox.addActionListener(new ActionListener() {
        boolean found = false;

        @Override
        public void actionPerformed(ActionEvent actionEvent) {
            String s = (String) comboBox.getSelectedItem();
            for (int i = 0; i < comboBox.getItemCount(); i++) {
                if (comboBox.getItemAt(i).toString().equals(s)) {
                    found = true;
                    break;
                }
            }
            if (!found) {
                System.out.println("Added: " + s);
                comboBox.addItem(s);
            }
            found = false;
        }
    });

    frame.add(comboBox);

    frame.pack();
    frame.setVisible(true);
}

From source file:SelectingComboSample.java

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

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

    JComboBox.KeySelectionManager manager = new JComboBox.KeySelectionManager() {
        public int selectionForKey(char aKey, ComboBoxModel aModel) {
            System.out.println(aKey);
            return -1;
        }/*from   ww w. ja  va 2 s .  c  om*/
    };
    comboBox.setKeySelectionManager(manager);

    frame.setSize(400, 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("Editable JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    final JComboBox comboBox = new JComboBox(labels);
    comboBox.setMaximumRowCount(5);//from   w  ww.  ja  v a 2s.com
    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);

}

From source file:Main.java

public static void main(String[] args) {
    Object[] items = new Object[] { "Dog", "Cat", "Other" };
    DefaultComboBoxModel dcbm = new DefaultComboBoxModel(items);
    JComboBox comboBox = new JComboBox(dcbm);
    comboBox.setPreferredSize(new Dimension(200, 20));
    comboBox.addItemListener(e -> {/*from   w  w w  .  jav a2 s . c  om*/
        Object selectedItem = comboBox.getSelectedItem();
        boolean editable = selectedItem instanceof String && ((String) selectedItem).equals("Other");
        comboBox.setEditable(editable);
    });
    comboBox.getEditor().addActionListener(e -> {
        Object newItem = comboBox.getEditor().getItem();
        DefaultComboBoxModel d = (DefaultComboBoxModel) comboBox.getModel();
        d.addElement(newItem);
        d.setSelectedItem(newItem);

    });

    JPanel content = new JPanel(new FlowLayout());
    content.add(new JLabel("Test:"));
    content.add(comboBox);

    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setContentPane(content);
    frame.pack();
    frame.setVisible(true);
}