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:Main.java

public static void main(String[] args) {

    JFrame frame = new JFrame("Test");
    JPanel panel = new JPanel();
    JLabel label = new JLabel("CenteredJLabel");

    panel.setLayout(new GridBagLayout());
    panel.add(label);/*from w w w.  j a va 2s.  c o m*/
    panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
    frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    frame.add(panel);
    frame.setSize(400, 300);
    frame.setVisible(true);

}

From source file:TextAreaExample.java

public static void main(String[] args) {
    JFrame f = new JFrame("Text Area Examples");
    JPanel upperPanel = new JPanel();
    JPanel lowerPanel = new JPanel();
    f.getContentPane().add(upperPanel, "North");
    f.getContentPane().add(lowerPanel, "South");

    upperPanel.add(new JTextArea(content));
    upperPanel.add(new JTextArea(content, 6, 10));
    upperPanel.add(new JTextArea(content, 3, 8));

    lowerPanel.add(new JScrollPane(new JTextArea(content, 6, 8)));
    JTextArea ta = new JTextArea(content, 6, 8);
    ta.setLineWrap(true);/*from ww w  .j  av a  2 s. c  om*/
    lowerPanel.add(new JScrollPane(ta));

    ta = new JTextArea(content, 6, 8);
    ta.setLineWrap(true);
    ta.setWrapStyleWord(true);
    lowerPanel.add(new JScrollPane(ta));

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

From source file:Main.java

public static void main(String[] args) {
    Box box = Box.createVerticalBox();
    for (int i = 1; i < 4; i++) {
        JPanel panel = new JPanel() {
            @Override/* w ww .  java2  s .  c o m*/
            public Dimension getMaximumSize() {
                return getPreferredSize();
            }
        };
        JLabel label1 = new JLabel("Label");
        JLabel label2 = new JLabel(String.valueOf(i));
        panel.add(label1);
        panel.add(label2);
        box.add(panel);

    }

    JFrame frame = new JFrame();
    frame.add(box);
    frame.pack();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    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 panel = new JPanel();
    final JButton button = new JButton("Select files...");
    button.addActionListener(e -> {/*from  w ww .  j av  a2 s.c o  m*/
        final JFileChooser chooser = new JFileChooser();
        chooser.setCurrentDirectory(chooser.getFileSystemView().getParentDirectory(new File("C:\\")));
        chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
        chooser.showDialog(button, "Select file");
    });
    panel.add(button);
    frame.add(panel);
    frame.pack();
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    JFrame f = new JFrame();
    f.setSize(800, 600);//from w w w.j a v a  2s.  c  o  m
    f.setLocationRelativeTo(null);

    JTabbedPane p = new JTabbedPane();
    p.addTab("T1", new JPanel());
    p.addTab("T2", new JPanel());
    p.addTab("T3", new JPanel());

    p.addChangeListener(e -> {
        System.out.println("" + p.getSelectedIndex());
        // Index starts at 0, so Index 2 = Tab3
        if (p.getSelectedIndex() == 2) {
            // do your stuff on Tab 3
        }
    });
    f.add(p);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    JPanel mainPanel = new JPanel();
    JTextField field = new JTextField(20);
    JTextField field1 = new JTextField(20);

    field.getDocument().addDocumentListener(new DocumentListener() {
        @Override//w w  w .  j  a  v  a  2  s  . c om
        public void changedUpdate(DocumentEvent e) {
            updateLabel(e);
        }

        @Override
        public void insertUpdate(DocumentEvent e) {
            updateLabel(e);
        }

        @Override
        public void removeUpdate(DocumentEvent e) {
            updateLabel(e);
        }

        private void updateLabel(DocumentEvent e) {
            field1.setText(field.getText());
        }
    });

    mainPanel.setLayout(new GridLayout(1, 0, 10, 0));
    mainPanel.add(field);
    mainPanel.add(field1);

    JFrame frame = new JFrame();
    frame.getContentPane().add(mainPanel);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    JTextField xField = new JTextField(5);
    JTextField yField = new JTextField(5);

    JPanel myPanel = new JPanel();
    myPanel.add(new JLabel("x:"));
    myPanel.add(xField);//www. j  a va 2  s  .  c  o  m
    myPanel.add(Box.createHorizontalStrut(15)); // a spacer
    myPanel.add(new JLabel("y:"));
    myPanel.add(yField);

    int result = JOptionPane.showConfirmDialog(null, myPanel, "Please Enter X and Y Values",
            JOptionPane.OK_CANCEL_OPTION);
    if (result == JOptionPane.OK_OPTION) {
        System.out.println("x value: " + xField.getText());
        System.out.println("y value: " + yField.getText());
    }

}

From source file:Main.java

public static void main(String[] args) {
    JTextField ipField = new JTextField(10);
    JTextField portField = new JTextField(10);
    JPanel panel = new JPanel();
    panel.add(new JLabel("IP:"));
    panel.add(ipField);//  www .  jav  a  2s  .c om

    panel.add(Box.createHorizontalStrut(15));
    panel.add(new JLabel("Port:"));
    panel.add(portField);

    int result = JOptionPane.showConfirmDialog(null, panel, "Enter Information", JOptionPane.OK_CANCEL_OPTION);

    if (result == JOptionPane.OK_OPTION) {
        System.out.println("IP: " + ipField.getText());
        System.out.println("Port: " + portField.getText());
    }
}

From source file:RigidArea.java

public static void main(String[] args) {
    JPanel panel = new JPanel();
    panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
    panel.setBorder(new EmptyBorder(new Insets(40, 60, 40, 60)));

    panel.add(new JButton("Button"));
    panel.add(Box.createRigidArea(new Dimension(0, 5)));
    panel.add(new JButton("Button"));
    panel.add(Box.createRigidArea(new Dimension(0, 5)));
    panel.add(new JButton("Button"));
    panel.add(Box.createRigidArea(new Dimension(0, 5)));
    panel.add(new JButton("Button"));

    JFrame f = new JFrame();
    f.add(panel);//from w  w w . j a va  2 s. co  m
    f.pack();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setLocationRelativeTo(null);
    f.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    JPanel panel = new JPanel() {
        @Override//from   w  w  w .j a  va 2 s  .  c  o m
        public Dimension getPreferredSize() {
            return new Dimension(200, 200);
        }
    };
    panel.addComponentListener(new ComponentAdapter() {
        @Override
        public void componentResized(ComponentEvent e) {
            System.out.println("Resized to " + e.getComponent().getSize());
        }

        @Override
        public void componentMoved(ComponentEvent e) {
            System.out.println("Moved to " + e.getComponent().getLocation());
        }
    });
    JTabbedPane tabbedPane = new JTabbedPane();
    tabbedPane.addTab("test", panel);
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setLayout(new BorderLayout());
    frame.add(tabbedPane);
    frame.pack();

    frame.setVisible(true);
}