Example usage for javax.swing JPanel JPanel

Introduction

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

Prototype

public JPanel() 

Source Link

Document

Creates a new JPanel with a double buffer and a flow layout.

Usage

From source file:DropModeINSERT.java

public static void main(String[] args) {
    JPanel north = new JPanel();
    north.add(new JLabel("Drag from here:"));
    JTextField field = new JTextField(10);
    field.setDragEnabled(true);//from w  w  w. j a va2  s  . c o m
    north.add(field);

    final DefaultListModel listModel = new DefaultListModel();
    listModel.addElement("first");
    listModel.addElement("second");
    final JList list = new JList(listModel);
    list.setDragEnabled(true);

    list.setTransferHandler(new TransferHandler() {
        public boolean canImport(TransferHandler.TransferSupport support) {
            if (!support.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                return false;
            }
            JList.DropLocation dl = (JList.DropLocation) support.getDropLocation();
            if (dl.getIndex() == -1) {
                return false;
            } else {
                return true;
            }
        }

        public boolean importData(TransferHandler.TransferSupport support) {
            if (!canImport(support)) {
                return false;
            }

            Transferable transferable = support.getTransferable();
            String data;
            try {
                data = (String) transferable.getTransferData(DataFlavor.stringFlavor);
            } catch (Exception e) {
                return false;
            }

            JList.DropLocation dl = (JList.DropLocation) support.getDropLocation();
            int index = dl.getIndex();
            if (dl.isInsert()) {
                listModel.add(index, data);
            } else {
                listModel.set(index, data);
            }

            // Scroll to display the element that was dropped
            Rectangle r = list.getCellBounds(index, index);
            list.scrollRectToVisible(r);
            return true;
        }
    });
    JScrollPane center = new JScrollPane();
    center.setViewportView(list);

    list.setDropMode(DropMode.INSERT);
    JPanel cp = new JPanel();
    cp.setLayout(new BorderLayout());
    cp.add(north, BorderLayout.NORTH);
    cp.add(center, BorderLayout.CENTER);
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setContentPane(cp);
    frame.pack();
    frame.setVisible(true);
}

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From source file:DropModeON_OR_INSERT.java

public static void main(String[] args) {
    JPanel north = new JPanel();
    north.add(new JLabel("Drag from here:"));
    JTextField field = new JTextField(10);
    field.setDragEnabled(true);//from w w w.  ja v a 2 s .c  o m
    north.add(field);

    final DefaultListModel listModel = new DefaultListModel();
    listModel.addElement("first");
    listModel.addElement("second");
    final JList list = new JList(listModel);
    list.setDragEnabled(true);

    list.setTransferHandler(new TransferHandler() {
        public boolean canImport(TransferHandler.TransferSupport support) {
            if (!support.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                return false;
            }
            JList.DropLocation dl = (JList.DropLocation) support.getDropLocation();
            if (dl.getIndex() == -1) {
                return false;
            } else {
                return true;
            }
        }

        public boolean importData(TransferHandler.TransferSupport support) {
            if (!canImport(support)) {
                return false;
            }

            Transferable transferable = support.getTransferable();
            String data;
            try {
                data = (String) transferable.getTransferData(DataFlavor.stringFlavor);
            } catch (Exception e) {
                return false;
            }

            JList.DropLocation dl = (JList.DropLocation) support.getDropLocation();
            int index = dl.getIndex();
            if (dl.isInsert()) {
                listModel.add(index, data);
            } else {
                listModel.set(index, data);
            }

            // Scroll to display the element that was dropped
            Rectangle r = list.getCellBounds(index, index);
            list.scrollRectToVisible(r);
            return true;
        }
    });
    JScrollPane center = new JScrollPane();
    center.setViewportView(list);

    list.setDropMode(DropMode.ON_OR_INSERT);
    JPanel cp = new JPanel();
    cp.setLayout(new BorderLayout());
    cp.add(north, BorderLayout.NORTH);
    cp.add(center, BorderLayout.CENTER);
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setContentPane(cp);
    frame.pack();
    frame.setVisible(true);
}

---

From source file:SharedDataBetweenComboBoxAndListSample.java

public static void main(String args[]) {
    final String labels[] = { "A", "B", "C", "D", "E", "F", "G" };

    final DefaultComboBoxModel model = new DefaultComboBoxModel(labels);

    JFrame frame = new JFrame("Shared Data");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel panel = new JPanel();
    JComboBox comboBox1 = new JComboBox(model);
    comboBox1.setEditable(true);//from   w w w . ja v a2 s .  com

    panel.add(comboBox1);
    frame.add(panel, BorderLayout.NORTH);

    JList jlist = new JList(model);
    JScrollPane scrollPane = new JScrollPane(jlist);
    frame.add(scrollPane, BorderLayout.CENTER);

    JButton button = new JButton("Add");
    frame.add(button, BorderLayout.SOUTH);
    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            model.addElement("New Added");
        }
    };
    button.addActionListener(actionListener);

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

---

From source file:ImageBorderHack.java

public static void main(String[] args) {
    JFrame frame = new JFrame("Hack #59: Image Border");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel();
    JButton button = new JButton("Image Border Test");
    panel.add(button);//from  w  ww  .  ja v a2 s .  c  om

    ImageBorder image_border = new ImageBorder(new ImageIcon("upperLeft.png").getImage(),
            new ImageIcon("upper.png").getImage(), new ImageIcon("upperRight.png").getImage(),

            new ImageIcon("leftCenter.png").getImage(), new ImageIcon("rightCenter.png").getImage(),

            new ImageIcon("bottomLeft.png").getImage(), new ImageIcon("bottomCenter.png").getImage(),
            new ImageIcon("bottomRight.png").getImage());
    panel.setBorder(image_border);

    frame.getContentPane().add(panel);
    frame.pack();
    // frame.setSize(200,200);
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    URL url = new URL("http://www.java2s.com/style/download.png");
    final BufferedImage image = ImageIO.read(url);
    int x = 50;/*from ww  w  . j  av a  2 s  .  c o  m*/
    final Image crop = image.getSubimage(x, 0, image.getWidth() - x, image.getHeight());
    Runnable r = new Runnable() {
        @Override
        public void run() {
            JPanel gui = new JPanel();
            gui.add(new JLabel(new ImageIcon(image)), BorderLayout.LINE_START);
            gui.add(new JLabel("java2s.com"));
            gui.add(new JLabel(new ImageIcon(crop)), BorderLayout.LINE_END);
            JOptionPane.showMessageDialog(null, gui);
        }
    };
    SwingUtilities.invokeLater(r);
}

---

From source file:Main.java

public static void main(String[] args) {
    JList<String> list = new JList<String>(new String[] { "one", "two", "three", "four", "five" });
    JScrollPane scrollPane = new JScrollPane(list);
    JButton btn = new JButton(new AbstractAction() {
        {/*from w  w w . j ava  2s. c  om*/
            putValue(NAME, "Select");
        }

        @Override
        public void actionPerformed(ActionEvent evt) {
            list.setSelectedIndex(0);
        }
    });
    JPanel panel = new JPanel();
    panel.add(scrollPane);
    panel.add(btn);
    JOptionPane.showMessageDialog(null, panel);
}

---

From source file:DnDDemo2.java

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

    JTextField textField = new JTextField(25);
    textField.setText("Let's swing higher");
    frame.add(textField);//w w w.  jav  a  2  s.c  om

    JTextArea textArea = new JTextArea("Demonstrating\ndrag and drop");
    textArea.setForeground(Color.red);
    frame.add(new JScrollPane(textArea));

    textArea.setDragEnabled(true);
    textField.setDragEnabled(true);
    TextColorTransferHandler transferHandler = new TextColorTransferHandler();
    textArea.setTransferHandler(transferHandler);
    textField.setTransferHandler(transferHandler);
    frame.pack();
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setSize(800, 600);/*from   w ww.j  a va2  s .c o  m*/
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    GraphicsDevice device = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();
    device.setFullScreenWindow(frame);
    device.setDisplayMode(new DisplayMode(800, 600, 32, 60));
    frame.setVisible(true);

    JButton btn = new JButton();
    btn.setText("Button");
    JPanel panel = new JPanel();

    panel.add(btn);
    frame.add(panel);

    btn.addActionListener(e -> {
        JOptionPane.showMessageDialog(frame.getContentPane(), "JOptionPane");
    });
}

---

From source file:Main.java

public static void main(String[] args) {
    JFrame frame = new JFrame();
    final JLabel valueLabel = new JLabel(String.valueOf(value));
    JButton decButton = new JButton("-");
    decButton.addActionListener(e -> valueLabel.setText(String.valueOf(--value)));

    JButton incButton = new JButton("+");
    incButton.addActionListener(e -> valueLabel.setText(String.valueOf(++value)));

    JPanel panel = new JPanel();
    panel.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    c.weightx = 1;//from  www. ja v  a  2  s .  c om
    c.gridx = 0;
    c.gridy = 0;
    panel.add(decButton, c);
    c.gridx = 1;
    panel.add(valueLabel, c);
    c.gridx = 2;
    panel.add(incButton, c);

    c.gridy = 1;
    int w = 32;
    for (c.gridx = 0; c.gridx < 3; c.gridx++) {
        panel.add(Box.createHorizontalStrut(w), c);
    }

    frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    frame.add(panel);
    frame.pack();
    frame.setVisible(true);
}

---

From source file:Capture.java

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

    Toolkit kit = Toolkit.getDefaultToolkit();
    final Dimension d = kit.getScreenSize();
    capture.setSize(d);/*from www . j a v a2s .com*/

    Rectangle rect = new Rectangle(d);
    try {
        Robot robot = new Robot();
        final BufferedImage image = robot.createScreenCapture(rect);
        image.flush();
        JPanel panel = new JPanel() {
            public void paintComponent(Graphics g) {
                g.drawImage(image, 0, 0, d.width, d.height, this);
            }
        };
        panel.setOpaque(false);
        panel.prepareImage(image, panel);
        panel.repaint();
        capture.getContentPane().add(panel);
    } catch (Exception e) {
        e.printStackTrace();
    }

    capture.setVisible(true);
}

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