Example usage for javax.swing JPanel setLayout

Introduction

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

Prototype

public void setLayout(LayoutManager mgr) 

Source Link

Document

Sets the layout manager for this container.

Usage

From source file:DnDDemo3.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);// www .j  a v  a 2  s  . co 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);
            }
            Rectangle r = list.getCellBounds(index, index);
            list.scrollRectToVisible(r);
            return true;
        }
    });
    JScrollPane center = new JScrollPane();
    center.setViewportView(list);

    list.setDropMode(DropMode.USE_SELECTION);
    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:FocusCycleSample.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Focus Cycle Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setLayout(new GridLayout(3, 3));
    for (int i = 0; i < 3; i++) {
        JButton button = new JButton("" + i);
        frame.add(button);//  w  w w .j  a v a  2 s . com
    }
    JPanel panel = new JPanel();
    panel.setFocusCycleRoot(true);
    panel.setFocusTraversalPolicyProvider(true);
    panel.setLayout(new GridLayout(1, 3));
    for (int i = 0; i < 3; i++) {
        JButton button = new JButton("" + (i + 3));
        panel.add(button);
    }
    frame.add(panel);
    for (int i = 0; i < 3; i++) {
        JButton button = new JButton("" + (i + 6));
        frame.add(button);
    }
    frame.setSize(300, 200);
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String[] argv) {
    JFrame f = new JFrame();
    f.setLayout(new BorderLayout());

    JPanel panel = new JPanel();
    JButton button = new JButton("A-ha!");
    button.setAlignmentX(Component.CENTER_ALIGNMENT);
    panel.setLayout(new BoxLayout(panel, BoxLayout.PAGE_AXIS));
    panel.add(Box.createVerticalGlue());
    panel.add(button);/*from   w  ww .  j  a  v a2 s.  co m*/
    panel.add(Box.createVerticalGlue());

    f.getContentPane().add(panel);

    f.setVisible(true);
}

---

From source file:AlignY.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Y Alignment");
    JPanel contentPane = (JPanel) frame.getContentPane();

    BoxLayout layout = new BoxLayout(contentPane, BoxLayout.X_AXIS);
    contentPane.setLayout(layout);

    JButton button = new JButton("0.0");
    button.setAlignmentY(Component.TOP_ALIGNMENT);
    contentPane.add(button);// w w w. j  a  v  a  2 s .  c o m
    button = new JButton("1.0");
    button.setAlignmentY(Component.BOTTOM_ALIGNMENT);
    contentPane.add(button);
    button = new JButton("0.5");
    button.setAlignmentY(Component.CENTER_ALIGNMENT);
    contentPane.add(button);

    frame.setSize(200, 100);
    frame.show();
}

---

From source file:DropModeON.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 v a  2  s .co  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);
    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:Main.java

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

    JPanel contentPane = new JPanel();
    contentPane.setOpaque(true);//  ww  w  .  jav a  2s  .  c om
    contentPane.setBackground(Color.WHITE);
    contentPane.setLayout(null);

    JLabel label = new JLabel("This JPanel uses Absolute Positioning", JLabel.CENTER);
    label.setSize(300, 30);
    label.setLocation(5, 5);

    JButton button = new JButton("USELESS");
    button.setSize(100, 30);
    button.setLocation(95, 45);

    contentPane.add(label);
    contentPane.add(button);

    frame.setContentPane(contentPane);
    frame.setSize(310, 125);
    frame.setLocationByPlatform(true);
    frame.setVisible(true);
}

---

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  www  .j a  v  a2  s  .  com*/
    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: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);//w  w  w. ja  v  a2 s.  co  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);
}

---

From source file:GlassExample.java

/** Construct a Splash screen with the given image */
public static void main(String[] args) {
    JFrame f = new JFrame("GlassPane");

    final JPanel p1 = new JPanel();
    p1.add(new JLabel("GlassPane Example"));
    JButton show = new JButton("Show");
    p1.add(show);//ww w  .  j a v a  2  s  .c o  m
    p1.add(new JButton("No-op"));
    f.getContentPane().add(p1);

    final JPanel glass = (JPanel) f.getGlassPane();

    glass.setVisible(true);
    glass.setLayout(new GridBagLayout());
    JButton glassButton = new JButton("Hide");
    glass.add(glassButton);

    f.setSize(150, 80);
    f.setVisible(true);

    boolean debug = false;
    if (debug) {
        System.out.println("Button is " + glassButton);
        System.out.println("GlassPane is " + glass);
    }

    // Add actions to the buttons...

    // show button (re-)shows the glass pane.
    show.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            glass.setVisible(true);
            p1.repaint();
        }
    });
    // hide button hides the Glass Pane to show what's under.
    glassButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            glass.setVisible(false);
            p1.repaint();
        }
    });
}

---

From source file:Main.java

public static void main(String[] args) {
    String[] data = { "alist", "arithmetic", "ASCIInumbers", "A", "B", "list", "C", "D", "E", "numeral", "G",
            "F" };

    JCheckBox[] checkBox;//  www  . j  av  a 2s .  co  m
    JButton submitButton;
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

    JPanel contentPane = new JPanel();
    contentPane.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
    contentPane.setLayout(new BorderLayout(5, 5));

    checkBox = new JCheckBox[data.length];
    JPanel centerPanel = new JPanel();
    centerPanel.setLayout(new GridLayout(0, 4, 5, 5));
    for (int i = 0; i < data.length; i++) {
        checkBox[i] = new JCheckBox(data[i]);
        centerPanel.add(checkBox[i]);
    }
    contentPane.add(centerPanel, BorderLayout.CENTER);

    JPanel footerPanel = new JPanel();
    submitButton = new JButton("Submit");
    footerPanel.add(submitButton);
    contentPane.add(footerPanel, BorderLayout.PAGE_END);

    frame.setContentPane(contentPane);
    frame.pack();
    frame.setLocationByPlatform(true);
    frame.setVisible(true);

}

---

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