Example usage for javax.swing.text JTextComponent getText

Introduction

In this page you can find the example usage for javax.swing.text JTextComponent getText.

Prototype

public String getText() 

Source Link

Document

Returns the text contained in this TextComponent.

Usage

From source file:AddingActionCommandActionListenerSample.java

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

    JTextField textField = new JTextField();
    frame.add(textField, BorderLayout.NORTH);
    frame.add(new JTextField(), BorderLayout.SOUTH);

    InputVerifier verifier = new InputVerifier() {
        public boolean verify(JComponent input) {
            final JTextComponent source = (JTextComponent) input;
            String text = source.getText();
            if ((text.length() != 0) && !(text.equals("Exit"))) {
                JOptionPane.showMessageDialog(frame, "Can't leave.", "Error Dialog", JOptionPane.ERROR_MESSAGE);
                return false;
            } else {
                return true;
            }//from   w  ww  .  j  a v a 2  s .co m
        }
    };
    textField.setInputVerifier(verifier);

    frame.setSize(250, 150);
    frame.setVisible(true);
}

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From source file:MainClass.java

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

    JTextField nameTextField = new JTextField();
    frame.add(nameTextField, BorderLayout.NORTH);
    frame.add(new JTextField(), BorderLayout.SOUTH);

    InputVerifier verifier = new InputVerifier() {
        public boolean verify(JComponent input) {
            final JTextComponent source = (JTextComponent) input;
            String text = source.getText();
            if ((text.length() != 0) && !(text.equals("Exit"))) {
                JOptionPane.showMessageDialog(source, "Can't leave.", "Error Dialog",
                        JOptionPane.ERROR_MESSAGE);
                return false;
            } else {
                return true;
            }/*from w  w  w  .  j  a  v a2s  .c om*/
        }
    };
    nameTextField.setInputVerifier(verifier);

    frame.setSize(250, 100);
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    JTextComponent tc = new JTextArea("Initial Text");
    int docLength = tc.getDocument().getLength();

    String text = tc.getText();

    // Get the last 3 characters
    int offset = docLength - 3;
    int len = 3;/*  w  ww.j  a  va 2 s.c  om*/
    text = tc.getText(offset, len);

}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    JTextComponent tc = new JTextArea("Initial Text");
    int docLength = tc.getDocument().getLength();

    // Get all text
    String text = tc.getText();

    // Get the first 3 characters
    int offset = 0;
    int len = 3;//from w  w  w.j  a  v a 2  s . c  o  m
    text = tc.getText(offset, len);

}

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From source file:JTextFieldSample.java

public static void main(String args[]) {
    String title = (args.length == 0 ? "TextField Listener Example" : args[0]);
    JFrame frame = new JFrame(title);
    Container content = frame.getContentPane();

    JPanel namePanel = new JPanel(new BorderLayout());
    JLabel nameLabel = new JLabel("Name: ");
    nameLabel.setDisplayedMnemonic(KeyEvent.VK_N);
    JTextField nameTextField = new JTextField();
    nameLabel.setLabelFor(nameTextField);
    namePanel.add(nameLabel, BorderLayout.WEST);
    namePanel.add(nameTextField, BorderLayout.CENTER);
    content.add(namePanel, BorderLayout.NORTH);

    JPanel cityPanel = new JPanel(new BorderLayout());
    JLabel cityLabel = new JLabel("City: ");
    cityLabel.setDisplayedMnemonic(KeyEvent.VK_C);
    JTextField cityTextField = new JTextField();
    cityLabel.setLabelFor(cityTextField);
    cityPanel.add(cityLabel, BorderLayout.WEST);
    cityPanel.add(cityTextField, BorderLayout.CENTER);
    content.add(cityPanel, BorderLayout.SOUTH);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            System.out.println("Command: " + actionEvent.getActionCommand());
        }//from   w ww.j  a v a2s  .  c o m
    };
    nameTextField.setActionCommand("Yo");
    nameTextField.addActionListener(actionListener);
    cityTextField.addActionListener(actionListener);

    KeyListener keyListener = new KeyListener() {
        public void keyPressed(KeyEvent keyEvent) {
            printIt("Pressed", keyEvent);
        }

        public void keyReleased(KeyEvent keyEvent) {
            printIt("Released", keyEvent);
        }

        public void keyTyped(KeyEvent keyEvent) {
            printIt("Typed", keyEvent);
        }

        private void printIt(String title, KeyEvent keyEvent) {
            int keyCode = keyEvent.getKeyCode();
            String keyText = KeyEvent.getKeyText(keyCode);
            System.out.println(title + " : " + keyText + " / " + keyEvent.getKeyChar());
        }
    };
    nameTextField.addKeyListener(keyListener);
    cityTextField.addKeyListener(keyListener);

    InputVerifier verifier = new InputVerifier() {
        public boolean verify(JComponent input) {
            final JTextComponent source = (JTextComponent) input;
            String text = source.getText();
            if ((text.length() != 0) && !(text.equals("Exit"))) {
                Runnable runnable = new Runnable() {
                    public void run() {
                        JOptionPane.showMessageDialog(source, "Can't leave.", "Error Dialog",
                                JOptionPane.ERROR_MESSAGE);
                    }
                };
                SwingUtilities.invokeLater(runnable);
                return false;
            } else {
                return true;
            }
        }
    };
    nameTextField.setInputVerifier(verifier);
    cityTextField.setInputVerifier(verifier);

    DocumentListener documentListener = new DocumentListener() {
        public void changedUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        public void insertUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        public void removeUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        private void printIt(DocumentEvent documentEvent) {
            DocumentEvent.EventType type = documentEvent.getType();
            String typeString = null;
            if (type.equals(DocumentEvent.EventType.CHANGE)) {
                typeString = "Change";
            } else if (type.equals(DocumentEvent.EventType.INSERT)) {
                typeString = "Insert";
            } else if (type.equals(DocumentEvent.EventType.REMOVE)) {
                typeString = "Remove";
            }
            System.out.print("Type  :   " + typeString + " / ");
            Document source = documentEvent.getDocument();
            int length = source.getLength();
            try {
                System.out.println("Contents: " + source.getText(0, length));
            } catch (BadLocationException badLocationException) {
                System.out.println("Contents: Unknown");
            }
        }
    };
    nameTextField.getDocument().addDocumentListener(documentListener);
    cityTextField.getDocument().addDocumentListener(documentListener);

    frame.setSize(250, 150);
    frame.setVisible(true);
}

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From source file:Main.java

public static double getDoubleTextField(double defaultValue, JTextComponent c) {
    try {//from ww  w . ja  va 2  s.co  m
        return Double.parseDouble(c.getText());
    } catch (RuntimeException re) {
        return defaultValue;
    }
}

---

From source file:Main.java

/**
 * Pastes via the fake clipboard./*from www . j  av a2 s. com*/
 */

static void fakePaste(JTextComponent tc) {
    String text = tc.getText();
    int caretPos = tc.getCaretPosition();

    tc.setText(text.substring(0, caretPos) + clipboard + text.substring(caretPos));
    tc.setCaretPosition(caretPos + clipboard.length());
}

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From source file:Main.java

public static void appendText(JTextComponent jcomponent, String str) {
    StringBuilder stringBuilder = new StringBuilder(jcomponent.getText()).append("\n").append(str);
    jcomponent.setText(stringBuilder.toString());
}

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From source file:Main.java

public static void refreshJTextComponent(JTextComponent textComponent) {
    // borrowed from metaphase editor
    int pos = textComponent.getCaretPosition();
    textComponent.setText(textComponent.getText());
    textComponent.validate();/*from ww w .j ava 2s  .c o  m*/
    try {
        textComponent.setCaretPosition(pos);
    } catch (IllegalArgumentException e) {
        // swallow the exception
        // seems like a bug in the JTextPane component
        // only happens occasionally when pasting text at the end of a document
        System.err.println(e.getMessage());
    }
}

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From source file:Main.java

public static KeyListener maxLength(JTextComponent textComponent, int length) {
    return new KeyAdapter() {
        @Override//w ww. j a  v  a2 s .  c  o m
        public void keyTyped(KeyEvent e) {
            if (textComponent.getText().length() >= length) {
                e.consume();
                textComponent.setText(textComponent.getText().substring(0, length));
            }
        }
    };
}

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