Example usage for javax.swing JTextField JTextField

Introduction

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

Prototype

public JTextField(String text, int columns) 

Source Link

Document

Constructs a new TextField initialized with the specified text and columns.

Usage

From source file:Main.java

public static void main(String[] args) {

    final JTextField tf = new JTextField("press <enter>", 20);
    tf.setHorizontalAlignment(JTextField.RIGHT);

    tf.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            int old = tf.getHorizontalAlignment();
            if (old == JTextField.LEFT)
                tf.setHorizontalAlignment(JTextField.RIGHT);
            if (old == JTextField.RIGHT)
                tf.setHorizontalAlignment(JTextField.CENTER);
            if (old == JTextField.CENTER)
                tf.setHorizontalAlignment(JTextField.LEFT);
        }//  ww w . j ava2 s. co  m
    });

    JFrame frame = new JFrame("JTextFieldExample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().setLayout(new java.awt.FlowLayout());
    frame.getContentPane().add(tf);
    frame.setSize(275, 75);
    frame.setVisible(true);
    tf.requestFocus();
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    JTextField textField = new JTextField("Prefix_", 20);
    textField.setNavigationFilter(new NavigationFilterPrefixWithBackspace(7, textField));
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().add(textField);
    frame.pack();/* w  ww. ja va 2 s  .c om*/
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String[] args) {
    JPanel panel = new JPanel(new GridBagLayout());
    for (int i = 0; i < 25; i++) {
        JTextField field = new JTextField("Field " + i, 20);
        GridBagConstraints constraints = new GridBagConstraints();
        constraints.gridy = i;//from   ww  w .j ava2 s .c  om
        panel.add(field, constraints);
    }
    JScrollPane scrollPane = new JScrollPane(panel);
    JButton removeButton = new JButton("Remove Field");
    removeButton.addActionListener(e -> {
        if (panel.getComponentCount() >= 1) {
            panel.remove(panel.getComponentCount() - 1);
            scrollPane.revalidate();
            scrollPane.repaint();
        }
    });
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setSize(640, 480);
    f.setLocation(200, 200);
    f.getContentPane().add(scrollPane);
    f.getContentPane().add(removeButton, BorderLayout.SOUTH);
    f.setVisible(true);
}

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From source file:BoxLayoutManagerContainerTest.java

public static void main(String[] args) {
    JFrame f = new JFrame("Vertical BoxLayout-managed container");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container pane = new BoxPanel();
    f.setContentPane(pane);// ww  w .  j  a v a2  s  .  c o  m
    pane.setLayout(new BoxLayout(pane, BoxLayout.Y_AXIS));
    for (float align = 0.0f; align <= 1.0f; align += 0.25f) {
        JTextField tf = new JTextField("X Alignment = " + align, 10);
        tf.setAlignmentX(align);
        pane.add(tf);
    }
    f.setSize(400, 300);
    f.setVisible(true);
}

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From source file:EditabilityExample.java

public static void main(String[] args) {
    try {/*w w w .j  a  v  a 2  s. co m*/
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    } catch (Exception evt) {
    }

    JFrame f = new JFrame("Editability Example");
    f.getContentPane().setLayout(new BoxLayout(f.getContentPane(), BoxLayout.Y_AXIS));
    f.getContentPane().add(firstField);

    JTextField tf = new JTextField("A read-only text field", 20);
    tf.setEditable(false);
    f.getContentPane().add(tf);

    JTextArea ta = new JTextArea("An editable\ntext area", 2, 20);
    ta.setBorder(BorderFactory.createLoweredBevelBorder());
    f.getContentPane().add(ta);

    ta = new JTextArea("A read-only\ntext area", 2, 20);
    ta.setBorder(BorderFactory.createLoweredBevelBorder());
    ta.setEditable(false);
    f.getContentPane().add(ta);

    f.pack();
    f.show();

    if (args.length == 1 && args[0].equals("disable")) {
        // Toggle the enabled state of the first
        // text field every 10 seconds
        Timer t = new Timer(10000, new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                firstField.setEnabled(!firstField.isEnabled());
                firstField.setText(firstFieldText + (firstField.isEnabled() ? "" : " (disabled)"));
            }
        });
        t.start();
    }
}

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From source file:FocusTest.java

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

    FocusListener listener = new FocusListener() {
        public void focusGained(FocusEvent e) {
            dumpInfo(e);/* ww w .j  a va2 s.  com*/
        }

        public void focusLost(FocusEvent e) {
            dumpInfo(e);
        }

        private void dumpInfo(FocusEvent e) {
            System.out.println("Source  : " + name(e.getComponent()));
            System.out.println("Opposite : " + name(e.getOppositeComponent()));
            System.out.println("Temporary: " + e.isTemporary());
        }

        private String name(Component c) {
            return (c == null) ? null : c.getName();
        }
    };

    // First
    JPanel panel = new JPanel();
    JLabel label = new JLabel("Label 1: ");
    JTextField text = new JTextField("Type your text", 15);
    text.setName("First");
    text.addFocusListener(listener);
    label.setDisplayedMnemonic(KeyEvent.VK_1);
    label.setLabelFor(text);
    panel.add(label);
    panel.add(text);
    contentPane.add(panel, BorderLayout.NORTH);

    // Second
    panel = new JPanel();
    label = new JLabel("Label 2: ");
    text = new JTextField("14.0", 10);
    text.setName("Second");
    text.addFocusListener(listener);
    text.setHorizontalAlignment(JTextField.RIGHT);
    label.setDisplayedMnemonic(KeyEvent.VK_2);
    label.setLabelFor(text);
    panel.add(label);
    panel.add(text);
    contentPane.add(panel, BorderLayout.SOUTH);

    frame.pack();
    frame.show();
}

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From source file:Main.java

public static void main(String args[]) {
    JFrame frame = new JFrame();
    Container contentPane = frame.getContentPane();
    ActionListener listener = new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            System.out.println("Command: " + e.getActionCommand());
            int modifiers = e.getModifiers();
            System.out.println("\tALT : " + checkMod(modifiers, ActionEvent.ALT_MASK));
            System.out.println("\tCTRL : " + checkMod(modifiers, ActionEvent.CTRL_MASK));
            System.out.println("\tMETA : " + checkMod(modifiers, ActionEvent.META_MASK));
            System.out.println("\tSHIFT: " + checkMod(modifiers, ActionEvent.SHIFT_MASK));
            Object source = e.getSource();
            if (source instanceof JComboBox) {
                JComboBox jb = (JComboBox) source;
                System.out.println("Combo: " + jb.getSelectedItem());
            }//from  w  ww .  j  ava  2  s . co  m
        }

        private boolean checkMod(int modifiers, int mask) {
            return ((modifiers & mask) == mask);
        }
    };

    String flavors[] = { "Item 1", "Item 2", "Item 3" };
    JComboBox jc = new JComboBox(flavors);
    jc.setMaximumRowCount(4);
    jc.setEditable(true);
    jc.addActionListener(listener);
    contentPane.add(jc, BorderLayout.NORTH);

    JButton b = new JButton("Button!");
    b.addActionListener(listener);
    contentPane.add(b, BorderLayout.CENTER);

    JPanel panel = new JPanel();
    JLabel label = new JLabel("Label 1: ");
    JTextField text = new JTextField("Type your text", 15);
    text.addActionListener(listener);
    label.setDisplayedMnemonic(KeyEvent.VK_1);
    label.setLabelFor(text);
    panel.add(label);
    panel.add(text);
    contentPane.add(panel, BorderLayout.SOUTH);

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

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From source file:ActionTest.java

public static void main(String args[]) {
    JFrame frame = new JFrame();
    Container contentPane = frame.getContentPane();
    ActionListener listener = new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            System.out.println("Command: " + e.getActionCommand());
            System.out.println("Modifiers: ");
            int modifiers = e.getModifiers();
            System.out.println("\tALT : " + checkMod(modifiers, ActionEvent.ALT_MASK));
            System.out.println("\tCTRL : " + checkMod(modifiers, ActionEvent.CTRL_MASK));
            System.out.println("\tMETA : " + checkMod(modifiers, ActionEvent.META_MASK));
            System.out.println("\tSHIFT: " + checkMod(modifiers, ActionEvent.SHIFT_MASK));
            Object source = e.getSource();
            if (source instanceof JComboBox) {
                JComboBox jb = (JComboBox) source;
                System.out.println("Combo: " + jb.getSelectedItem());
            }// ww w. j  av  a 2  s . com
        }

        private boolean checkMod(int modifiers, int mask) {
            return ((modifiers & mask) == mask);
        }
    };

    String flavors[] = { "Item 1", "Item 2", "Item 3" };
    JComboBox jc = new JComboBox(flavors);
    jc.setMaximumRowCount(4);
    jc.setEditable(true);
    jc.addActionListener(listener);
    contentPane.add(jc, BorderLayout.NORTH);

    JButton b = new JButton("Button!");
    b.addActionListener(listener);
    contentPane.add(b, BorderLayout.CENTER);

    JPanel panel = new JPanel();
    JLabel label = new JLabel("Label 1: ");
    JTextField text = new JTextField("Type your text", 15);
    text.addActionListener(listener);
    label.setDisplayedMnemonic(KeyEvent.VK_1);
    label.setLabelFor(text);
    panel.add(label);
    panel.add(text);
    contentPane.add(panel, BorderLayout.SOUTH);

    frame.pack();
    frame.show();
}

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From source file:SpringDemo2.java

public static void main(String[] args) {
    JFrame frame = new JFrame("SpringDemo2");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // Set up the content pane.
    Container contentPane = frame.getContentPane();
    SpringLayout layout = new SpringLayout();
    contentPane.setLayout(layout);//from  ww  w  .  ja  va  2 s .  co  m

    // Create and add the components.
    JLabel label = new JLabel("Label: ");
    JTextField textField = new JTextField("Text field", 15);
    contentPane.add(label);
    contentPane.add(textField);

    // Adjust constraints for the label so it's at (5,5).
    layout.putConstraint(SpringLayout.WEST, label, 5, SpringLayout.WEST, contentPane);
    layout.putConstraint(SpringLayout.NORTH, label, 5, SpringLayout.NORTH, contentPane);

    // Adjust constraints for the text field so it's at
    // (<label's right edge> + 5, 5).
    layout.putConstraint(SpringLayout.WEST, textField, 5, SpringLayout.EAST, label);
    layout.putConstraint(SpringLayout.NORTH, textField, 5, SpringLayout.NORTH, contentPane);

    // Display the window.
    frame.pack();
    frame.setVisible(true);
}

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From source file:SpringDemo3.java

public static void main(String[] args) {
    JFrame frame = new JFrame("SpringDemo3");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // Set up the content pane.
    Container contentPane = frame.getContentPane();
    SpringLayout layout = new SpringLayout();
    contentPane.setLayout(layout);//from w w w. j  a va  2s.c o  m

    // Create and add the components.
    JLabel label = new JLabel("Label: ");
    JTextField textField = new JTextField("Text field", 15);
    contentPane.add(label);
    contentPane.add(textField);

    // Adjust constraints for the label so it's at (5,5).
    layout.putConstraint(SpringLayout.WEST, label, 5, SpringLayout.WEST, contentPane);
    layout.putConstraint(SpringLayout.NORTH, label, 5, SpringLayout.NORTH, contentPane);

    // Adjust constraints for the text field so it's at
    // (<label's right edge> + 5, 5).
    layout.putConstraint(SpringLayout.WEST, textField, 5, SpringLayout.EAST, label);
    layout.putConstraint(SpringLayout.NORTH, textField, 5, SpringLayout.NORTH, contentPane);

    // Adjust constraints for the content pane: Its right
    // edge should be 5 pixels beyond the text field's right
    // edge, and its bottom edge should be 5 pixels beyond
    // the bottom edge of the tallest component (which we'll
    // assume is textField).
    layout.putConstraint(SpringLayout.EAST, contentPane, 5, SpringLayout.EAST, textField);
    layout.putConstraint(SpringLayout.SOUTH, contentPane, 5, SpringLayout.SOUTH, textField);

    // Display the window.
    frame.pack();
    frame.setVisible(true);
}

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