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(boolean isDoubleBuffered) 

Source Link

Document

Creates a new JPanel with FlowLayout and the specified buffering strategy.

Usage

From source file:Main.java

public static void main(String[] args) {
    final JFrame frame = new JFrame(Main.class.getSimpleName());
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel btmPanel = new JPanel(new GridBagLayout());
    GridBagConstraints gbc = new GridBagConstraints();
    gbc.weighty = 1.0;// ww w. ja  v a  2 s.  c  o  m
    gbc.weightx = 1.0;
    gbc.fill = GridBagConstraints.HORIZONTAL;
    gbc.insets = new Insets(5, 5, 5, 5);
    gbc.anchor = GridBagConstraints.NORTH;
    JButton comp = new JButton("Panel-1");
    btmPanel.add(comp, gbc);
    JButton comp2 = new JButton("Panel-2");
    btmPanel.add(comp2, gbc);
    JButton comp3 = new JButton("Panel-3");
    comp3.setPreferredSize(new Dimension(comp.getPreferredSize().width, comp.getPreferredSize().height + 10));
    btmPanel.add(comp3, gbc);
    frame.add(btmPanel);
    frame.pack();
    frame.setVisible(true);
}

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From source file:Main.java

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

    JPanel userPanel = new JPanel(new BorderLayout());
    JLabel userLabel = new JLabel("Username: ");
    userLabel.setDisplayedMnemonic(KeyEvent.VK_U);
    JTextField userTextField = new JTextField();
    userLabel.setLabelFor(userTextField);
    userPanel.add(userLabel, BorderLayout.WEST);
    userPanel.add(userTextField, BorderLayout.CENTER);

    JPanel passPanel = new JPanel(new BorderLayout());
    JLabel passLabel = new JLabel("Password: ");
    passLabel.setDisplayedMnemonic('p');
    JPasswordField passTextField = new JPasswordField();
    passLabel.setLabelFor(passTextField);
    passPanel.add(passLabel, BorderLayout.WEST);
    passPanel.add(passTextField, BorderLayout.CENTER);

    JPanel panel = new JPanel(new BorderLayout());
    panel.add(userPanel, BorderLayout.NORTH);
    panel.add(passPanel, BorderLayout.SOUTH);
    frame.add(panel, BorderLayout.NORTH);

    frame.setSize(250, 150);//w w  w. j  a  v a  2  s .c  o m
    frame.setVisible(true);
}

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From source file:Main.java

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

    JPanel userPanel = new JPanel(new BorderLayout());
    JLabel userLabel = new JLabel("Username: ");
    userLabel.setDisplayedMnemonic(KeyEvent.VK_U);
    JTextField userTextField = new JTextField();
    userLabel.setLabelFor(userTextField);
    userPanel.add(userLabel, BorderLayout.WEST);
    userPanel.add(userTextField, BorderLayout.CENTER);

    System.out.println(userLabel.getDisplayedMnemonicIndex());

    JPanel passPanel = new JPanel(new BorderLayout());
    JLabel passLabel = new JLabel("Password: ");
    passLabel.setDisplayedMnemonic('p');
    JPasswordField passTextField = new JPasswordField();
    passLabel.setLabelFor(passTextField);
    passPanel.add(passLabel, BorderLayout.WEST);
    passPanel.add(passTextField, BorderLayout.CENTER);

    JPanel panel = new JPanel(new BorderLayout());
    panel.add(userPanel, BorderLayout.NORTH);
    panel.add(passPanel, BorderLayout.SOUTH);
    frame.add(panel, BorderLayout.NORTH);

    frame.setSize(250, 150);//from ww  w  . ja  v  a  2  s.co m
    frame.setVisible(true);
}

---

From source file:Main.java

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

    JPanel userPanel = new JPanel(new BorderLayout());
    JLabel userLabel = new JLabel("Username: ");
    userLabel.setDisplayedMnemonic(KeyEvent.VK_U);
    JTextField userTextField = new JTextField();
    userLabel.setLabelFor(userTextField);
    userPanel.add(userLabel, BorderLayout.WEST);
    userPanel.add(userTextField, BorderLayout.CENTER);

    System.out.println(userLabel.getDisplayedMnemonic());

    JPanel passPanel = new JPanel(new BorderLayout());
    JLabel passLabel = new JLabel("Password: ");
    passLabel.setDisplayedMnemonic('p');
    JPasswordField passTextField = new JPasswordField();
    passLabel.setLabelFor(passTextField);
    passPanel.add(passLabel, BorderLayout.WEST);
    passPanel.add(passTextField, BorderLayout.CENTER);

    JPanel panel = new JPanel(new BorderLayout());
    panel.add(userPanel, BorderLayout.NORTH);
    panel.add(passPanel, BorderLayout.SOUTH);
    frame.add(panel, BorderLayout.NORTH);

    frame.setSize(250, 150);/*from   w  ww  .jav a2  s .  c  om*/
    frame.setVisible(true);
}

---

From source file:Main.java

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

    JPanel userPanel = new JPanel(new BorderLayout());
    JLabel userLabel = new JLabel("Username: ");
    userLabel.setDisplayedMnemonic(KeyEvent.VK_U);
    JTextField userTextField = new JTextField();
    userLabel.setLabelFor(userTextField);
    userPanel.add(userLabel, BorderLayout.WEST);
    userPanel.add(userTextField, BorderLayout.CENTER);

    System.out.println(userLabel.getHorizontalAlignment());

    JPanel passPanel = new JPanel(new BorderLayout());
    JLabel passLabel = new JLabel("Password: ");
    passLabel.setDisplayedMnemonic('p');
    JPasswordField passTextField = new JPasswordField();
    passLabel.setLabelFor(passTextField);
    passPanel.add(passLabel, BorderLayout.WEST);
    passPanel.add(passTextField, BorderLayout.CENTER);

    JPanel panel = new JPanel(new BorderLayout());
    panel.add(userPanel, BorderLayout.NORTH);
    panel.add(passPanel, BorderLayout.SOUTH);
    frame.add(panel, BorderLayout.NORTH);

    frame.setSize(250, 150);/*from   w ww  .  j  a  va  2 s . co m*/
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    MaskFormatter formatter = new MaskFormatter("###-##-####");
    JFormattedTextField tf = new JFormattedTextField(formatter);
    JPanel panel = new JPanel(new BorderLayout());
    panel.add(tf, BorderLayout.NORTH);
    JButton clickBtn = new JButton("Click me!");
    clickBtn.addActionListener(e -> {
        if (!tf.getText().matches(formatter.getMask())) {
            System.err.println("Your Input does not match the pattern!");
        } else {//from   w  w w .  ja  va 2  s.co m
            System.out.println(tf.getText());
        }
    });
    panel.add(clickBtn, BorderLayout.SOUTH);
    JFrame f = new JFrame();

    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(panel, BorderLayout.CENTER);
    f.setSize(800, 600);
    f.setVisible(true);
}

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From source file:FormattedSample.java

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

    JPanel datePanel = new JPanel(new BorderLayout());
    DateFormat format = new SimpleDateFormat("yyyy--MMMM--dd");
    JFormattedTextField dateTextField = new JFormattedTextField(format);
    datePanel.add(dateTextField, BorderLayout.CENTER);
    frame.add(datePanel, BorderLayout.NORTH);

    frame.add(new JTextField(), BorderLayout.SOUTH);
    frame.setSize(250, 100);//w  ww.ja  v a 2  s  . c o m
    frame.setVisible(true);
}

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From source file:MainClass.java

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

    JPanel userPanel = new JPanel(new BorderLayout());
    JLabel userLabel = new JLabel("Username: ");
    userLabel.setDisplayedMnemonic(KeyEvent.VK_U);
    JTextField userTextField = new JTextField();
    userLabel.setLabelFor(userTextField);
    userPanel.add(userLabel, BorderLayout.WEST);
    userPanel.add(userTextField, BorderLayout.CENTER);

    JPanel passPanel = new JPanel(new BorderLayout());
    JLabel passLabel = new JLabel("Password: ");
    passLabel.setDisplayedMnemonic(KeyEvent.VK_P);
    JPasswordField passTextField = new JPasswordField();
    passLabel.setLabelFor(passTextField);
    passPanel.add(passLabel, BorderLayout.WEST);
    passPanel.add(passTextField, BorderLayout.CENTER);

    JPanel panel = new JPanel(new BorderLayout());
    panel.add(userPanel, BorderLayout.NORTH);
    panel.add(passPanel, BorderLayout.SOUTH);
    frame.add(panel, BorderLayout.NORTH);

    frame.setSize(250, 150);/*from ww w .j  a  v  a  2  s  .co m*/
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String[] args) {
    String pt1 = "<html><body width='";
    String pt2 = "'><h1>Label Width</h1>" + "<p>Many Swing components support HTML 3.2 &amp;"
            + " (simple) CSS.  This is a new line.<br><br>" + "<p>The body width in this text is set to " + "";
    String pt3 = " pixels." + "";

    JPanel p = new JPanel(new BorderLayout());

    int width = 175;
    String s = pt1 + width + pt2 + width + pt3;

    JOptionPane.showMessageDialog(null, s);
}

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From source file:Main.java

public static void main(String[] args) throws UnsupportedEncodingException {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel(new BorderLayout());
    JPanel buttons = new JPanel();
    JScrollPane pane = new JScrollPane(buttons);
    pane.getViewport().addChangeListener(e -> {
        System.out.println("Change in " + e.getSource());
        System.out.println("Vertical visible? " + pane.getVerticalScrollBar().isVisible());
        System.out.println("Horizontal visible? " + pane.getHorizontalScrollBar().isVisible());
    });//w w w.ja  v  a 2 s.  c o m
    panel.add(pane);
    frame.setContentPane(panel);
    frame.setSize(300, 200);
    frame.setVisible(true);
    SwingWorker<Void, Void> worker = new SwingWorker<Void, Void>() {
        @Override
        protected Void doInBackground() throws Exception {
            for (int i = 0; i < 10; i++) {
                Thread.sleep(800);
                buttons.add(new JButton("Hello " + i));
                buttons.revalidate();
            }
            return null;
        }
    };
    worker.execute();
}

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