Example usage for javax.swing JLabel JLabel

Introduction

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

Prototype

public JLabel() 

Source Link

Document

Creates a JLabel instance with no image and with an empty string for the title.

Usage

From source file:DisplayMessage.java

public static void main(String[] args) {
    /*//from www  .j  a va2s  . co  m
     * Step 1: Create the components
     */
    JLabel msgLabel = new JLabel(); // Component to display the question
    JButton yesButton = new JButton(); // Button for an affirmative response
    JButton noButton = new JButton(); // Button for a negative response

    /*
     * Step 2: Set properties of the components
     */
    msgLabel.setText(args[0]); // The msg to display
    msgLabel.setBorder(new EmptyBorder(10, 10, 10, 10)); // A 10-pixel margin 
    yesButton.setText((args.length >= 2) ? args[1] : "Yes"); // Text for Yes button
    noButton.setText((args.length >= 3) ? args[2] : "No"); // Text for no button

    /*
     * Step 3: Create containers to hold the components
     */
    JFrame win = new JFrame("Message"); // The main application window
    JPanel buttonbox = new JPanel(); // A container for the two buttons

    /*
     * Step 4: Specify LayoutManagers to arrange components in the containers
     */
    win.getContentPane().setLayout(new BorderLayout()); // layout on borders
    buttonbox.setLayout(new FlowLayout()); // layout left-to-right

    /*
     * Step 5: Add components to containers, with optional layout constraints
     */
    buttonbox.add(yesButton); // add yes button to the panel
    buttonbox.add(noButton); // add no button to the panel

    // add JLabel to window, telling the BorderLayout to put it in the middle
    win.getContentPane().add(msgLabel, "Center");

    // add panel to window, telling the BorderLayout to put it at the bottom
    win.getContentPane().add(buttonbox, "South");

    /*
     * Step 6: Arrange to handle events in the user interface.
     */
    yesButton.addActionListener(new ActionListener() { // Note: inner class
        // This method is called when the Yes button is clicked.
        public void actionPerformed(ActionEvent e) {
            System.exit(0);
        }
    });

    noButton.addActionListener(new ActionListener() { // Note: inner class
        // This method is called when the No button is clicked.
        public void actionPerformed(ActionEvent e) {
            System.exit(1);
        }
    });

    /*
     * Step 7: Display the GUI to the user
     */
    win.pack(); // Set the size of the window based its children's sizes.
    win.show(); // Make the window visible.
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    JFrame Main = new JFrame("Gradient Mask");
    JLabel imageLayer = new JLabel();
    JLabel maskLayer = new JLabel();
    BufferedImage image = ImageIO.read(new URL("http://www.java2s.com/style/download.png"));
    BufferedImage gradientMask = new GradientImage(image.getWidth(), image.getHeight(),
            new Color[] { new Color(255, 255, 255, 125), Color.BLACK }, GradientImage.RADIAL_FROM_CENTER)
                    .getImage();//from   w  w w . ja va  2  s  .co  m
    Main.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Main.setBounds(100, 50, image.getWidth(), image.getHeight());
    imageLayer.setBounds(0, 0, Main.getWidth(), Main.getHeight());
    maskLayer.setBounds(0, 0, Main.getWidth(), Main.getHeight());
    imageLayer.setIcon(new ImageIcon((Image) image));
    maskLayer.setIcon(new ImageIcon((Image) gradientMask));
    Main.getContentPane().add(imageLayer);
    imageLayer.add(maskLayer);
    Main.setVisible(true);
}

---

From source file:Main.java

public static void main(String args[]) throws Exception {
    Color colors[] = { Color.GREEN, Color.ORANGE, Color.PINK, Color.RED, Color.WHITE, Color.YELLOW };
    JFrame frame = new JFrame("Color JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    final JComboBox comboBox = new JComboBox(colors);
    comboBox.setMaximumRowCount(5);/*from   w  w  w . j  a v  a2  s  . c  o m*/
    comboBox.setEditable(true);
    comboBox.setRenderer(new ColorCellRenderer());
    frame.add(comboBox, BorderLayout.NORTH);

    final JLabel label = new JLabel();
    label.setOpaque(true);
    label.setBackground((Color) comboBox.getSelectedItem());
    frame.add(label, BorderLayout.CENTER);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            Color selectedColor = (Color) comboBox.getSelectedItem();
            label.setBackground(selectedColor);
        }
    };
    comboBox.addActionListener(actionListener);

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

---

From source file:FileSample.java

public static void main(String args[]) {
    JFrame frame = new JFrame("JFileChooser Popup");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    final JLabel directoryLabel = new JLabel();
    contentPane.add(directoryLabel, BorderLayout.NORTH);

    final JLabel filenameLabel = new JLabel();
    contentPane.add(filenameLabel, BorderLayout.SOUTH);

    final JButton button = new JButton("Open FileChooser");
    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            Component parent = (Component) actionEvent.getSource();
            JFileChooser fileChooser = new JFileChooser(".");
            fileChooser.setAccessory(new LabelAccessory(fileChooser));
            FileView view = new JavaFileView();
            fileChooser.setFileView(view);
            int status = fileChooser.showOpenDialog(parent);
            if (status == JFileChooser.APPROVE_OPTION) {
                File selectedFile = fileChooser.getSelectedFile();
                directoryLabel.setText(selectedFile.getParent());
                filenameLabel.setText(selectedFile.getName());
            } else if (status == JFileChooser.CANCEL_OPTION) {
                directoryLabel.setText(" ");
                filenameLabel.setText(" ");
            }//from  w  w  w.ja v  a2 s. c om
        }
    };
    button.addActionListener(actionListener);
    contentPane.add(button, BorderLayout.CENTER);

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

---

From source file:FilterSample.java

public static void main(String args[]) {
    JFrame frame = new JFrame("JFileChooser Filter Popup");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    final JLabel directoryLabel = new JLabel();
    contentPane.add(directoryLabel, BorderLayout.NORTH);

    final JLabel filenameLabel = new JLabel();
    contentPane.add(filenameLabel, BorderLayout.SOUTH);

    final JButton button = new JButton("Open FileChooser");
    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            Component parent = (Component) actionEvent.getSource();
            JFileChooser fileChooser = new JFileChooser(".");
            fileChooser.setAccessory(new LabelAccessory(fileChooser));
            FileFilter filter1 = new ExtensionFileFilter(null, new String[] { "JPG", "JPEG" });
            //        fileChooser.setFileFilter(filter1);
            fileChooser.addChoosableFileFilter(filter1);
            FileFilter filter2 = new ExtensionFileFilter("gif", new String[] { "gif" });
            fileChooser.addChoosableFileFilter(filter2);
            fileChooser.setFileView(new JavaFileView());
            int status = fileChooser.showOpenDialog(parent);
            if (status == JFileChooser.APPROVE_OPTION) {
                File selectedFile = fileChooser.getSelectedFile();
                directoryLabel.setText(selectedFile.getParent());
                filenameLabel.setText(selectedFile.getName());
            } else if (status == JFileChooser.CANCEL_OPTION) {
                directoryLabel.setText(" ");
                filenameLabel.setText(" ");
            }/*www.ja  v  a 2  s  .  c om*/
        }
    };
    button.addActionListener(actionListener);
    contentPane.add(button, BorderLayout.CENTER);

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

---

From source file:ColorComboBox.java

public static void main(String args[]) {
    Color colors[] = { Color.black, Color.blue, Color.cyan, Color.darkGray, Color.gray, Color.green,
            Color.lightGray, Color.magenta, Color.orange, Color.pink, Color.red, Color.white, Color.yellow };
    JFrame frame = new JFrame("Color JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    final JComboBox comboBox = new JComboBox(colors);
    comboBox.setMaximumRowCount(5);//from   ww  w .j  av a 2  s  .  c o m
    comboBox.setEditable(true);
    comboBox.setRenderer(new ColorCellRenderer());
    Color color = (Color) comboBox.getSelectedItem();
    ComboBoxEditor editor = new ColorComboBoxEditor(color);
    comboBox.setEditor(editor);
    contentPane.add(comboBox, BorderLayout.NORTH);

    final JLabel label = new JLabel();
    label.setOpaque(true);
    label.setBackground((Color) comboBox.getSelectedItem());
    contentPane.add(label, BorderLayout.CENTER);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            Color selectedColor = (Color) comboBox.getSelectedItem();
            label.setBackground(selectedColor);
        }
    };
    comboBox.addActionListener(actionListener);

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

---

From source file:Main.java

public static JLabel createSAFLabel(final String name, final JComponent labelForComponent) {
    JLabel label = new JLabel();
    label.setName(name);//from w w w . j  a  va  2  s  .  c o  m
    if (labelForComponent != null) {
        label.setLabelFor(labelForComponent);
    }
    return label;
}

---

From source file:Main.java

public static void showDialogWhitImage(URL pathuRL) {

    JPanel panel = new JPanel();
    JLabel jLabel = new JLabel();
    jLabel.setIcon(new javax.swing.ImageIcon(pathuRL)); // NOI18N
    panel.add(jLabel);//from  ww  w . j a v a  2s  .c om
    JOptionPane.showMessageDialog(null, panel);
    jLabel = null;
    panel = null;
}

---

From source file:Main.java

public static void addNewLineTo(Container container) {
    JLabel label = new JLabel();
    label.setPreferredSize(new Dimension(SCREEN_SIZE.width, 0));
    container.add(label);// w  ww .  j a v a  2 s .  c  o m
}

---

From source file:Main.java

public static Dimension getTextDimension(final String text, final Font font) {
    if (defaultLabel == null) {
        defaultLabel = new JLabel();
    }//from w  w  w  .  j av a2 s  .com

    // get metrics from the graphics
    FontMetrics fontMetrics = defaultLabel.getFontMetrics(font);

    // get the height of a line of text in this
    // font and render context
    int hgt = fontMetrics.getHeight();
    // get the advance of my text in this font
    // and render context
    int adv = fontMetrics.stringWidth(text);
    // calculate the size of a box to hold the text
    Dimension size = new Dimension(adv, hgt);

    return size;
}

---

• «
• 1
• 2
• 3
• »