Example usage for javax.swing JTextArea JTextArea

Introduction

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

Prototype

public JTextArea()

Source Link

Document

Constructs a new TextArea.

Usage

From source file:JDK6TextComponentDemo.java

public static void main(String[] args) throws Exception {
    final JTextArea textArea = new JTextArea();
    textArea.setText("text");
    JScrollPane jScrollPane = new JScrollPane(textArea);
    final MessageFormat header = new MessageFormat("My Header");
    final MessageFormat footer = new MessageFormat("My Footer");

    JPanel contentPane = new JPanel();
    contentPane.setLayout(new BorderLayout());
    contentPane.add(jScrollPane, BorderLayout.CENTER);

    JFrame frame = new JFrame();
    frame.setTitle("Text-component Printing Demo");
    frame.setSize(400, 200);/* ww w.  j av a  2 s .c o  m*/
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    frame.setContentPane(contentPane);
    frame.setVisible(true);
    textArea.print(header, footer, true, null, null, true);

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    JTextArea component = new JTextArea();
    Action defAction = findDefaultAction(component);
    component.getKeymap().setDefaultAction(new MyDefaultAction(defAction));
}

From source file:TextArea.java

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

    JTextArea area = new JTextArea();
    area.setLineWrap(true);//from w w w .j ava 2  s.  c o  m
    area.setWrapStyleWord(true);
    area.setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));

    f.add(new JScrollPane(area));
    f.setSize(new Dimension(350, 300));

    f.setLocationRelativeTo(null);
    f.setVisible(true);
}

From source file:Main.java

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

    content.setLayout(new GridLayout(0, 2));

    JTextArea leftTextArea = new JTextArea();
    content.add(leftTextArea);// ww  w . j a  v  a 2  s  .  c  o m
    leftTextArea.paste();

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

From source file:Main.java

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

    JTextArea textarea1 = new JTextArea();
    Document document = textarea1.getDocument();
    JTextArea textarea2 = new JTextArea(document);
    JTextArea textarea3 = new JTextArea(document);

    frame.setLayout(new BoxLayout(frame.getContentPane(), BoxLayout.Y_AXIS));
    frame.add(new JScrollPane(textarea1));
    frame.add(new JScrollPane(textarea2));
    frame.add(new JScrollPane(textarea3));
    frame.setSize(300, 400);/*ww w. ja  v a2s  . c o  m*/
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    DocumentFilter dfilter = new UpperCaseFilter();

    JTextArea jta = new JTextArea();
    ((AbstractDocument) jta.getDocument()).setDocumentFilter(dfilter);

    JFrame frame = new JFrame("UpcaseFilter");
    frame.getContentPane().add(jta, java.awt.BorderLayout.CENTER);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200, 120);/* ww w  . j a v a2  s . c o m*/
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    JTextArea textComp = new JTextArea();

    Highlighter hilite = textComp.getHighlighter();
    Highlighter.Highlight[] hilites = hilite.getHighlights();

    for (int i = 0; i < hilites.length; i++) {
        if (hilites[i].getPainter() instanceof MyHighlightPainter) {
            hilite.removeHighlight(hilites[i]);
        }/*from www .j a va 2 s  .  c  om*/
    }
    highlight(textComp);
}

From source file:Main.java

public static void main(String[] argv) {
    InputMap im = new JTextArea().getInputMap(JComponent.WHEN_FOCUSED);
    im.put(KeyStroke.getKeyStroke("F2"), "actionName");

    ActionMap am = new JTextArea().getActionMap();
    am.put("actionName", new AbstractAction("actionName") {
        public void actionPerformed(ActionEvent evt) {
            System.out.println((JTextComponent) evt.getSource());
        }//from w  ww .  jav a 2  s.  c om
    });
    im.put(KeyStroke.getKeyStroke("F3"), "actionName2");
    am.put("actionName2", new AbstractAction("actionName2") {
        public void actionPerformed(ActionEvent evt) {
            System.out.println((JTextComponent) evt.getSource());
        }
    });
    JButton component1 = new JButton("button 1");
    JButton component2 = new JButton("button 2");

    component1.setInputMap(JComponent.WHEN_FOCUSED, im);
    component2.setInputMap(JComponent.WHEN_FOCUSED, im);

    component1.setActionMap(am);
    component2.setActionMap(am);

}

From source file:Main.java

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

    JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);
    frame.add(scrollPane, BorderLayout.CENTER);

    CaretListener listener = new CaretListener() {
        public void caretUpdate(CaretEvent caretEvent) {
            System.out.println("Dot: " + caretEvent.getDot());
            System.out.println("Mark: " + caretEvent.getMark());
        }//from w ww  .ja  v a  2 s.  c  o m
    };

    textArea.addCaretListener(listener);

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

From source file:Main.java

public static void main(String[] argv) throws Exception {
    JTextArea comp = new JTextArea();
    String actionName = "Lowercase";

    JFrame f = new JFrame();
    f.add(new JScrollPane(comp));
    f.setSize(300, 300);/*from w  w w.jav  a  2 s  .co  m*/
    f.setVisible(true);
    comp.getInputMap().put(KeyStroke.getKeyStroke("F2"), actionName);

    comp.getActionMap().put(actionName, new TextAction(actionName) {
        public void actionPerformed(ActionEvent evt) {
            JTextComponent comp = getTextComponent(evt);

            if (comp.getSelectionStart() == comp.getSelectionEnd()) {
                if (comp.getCaretPosition() < comp.getDocument().getLength()) {
                    try {
                        int pos = comp.getCaretPosition();
                        Document doc = comp.getDocument();
                        String str = doc.getText(pos, 1).toLowerCase();

                        doc.remove(pos, 1);
                        doc.insertString(pos, str, null);
                        comp.moveCaretPosition(pos + 1);
                    } catch (Exception e) {
                        System.out.println();
                    }
                }
            } else {
                int s = comp.getSelectionStart();
                int e = comp.getSelectionEnd();

                comp.replaceSelection(comp.getSelectedText().toLowerCase());
                comp.select(s, e);
            }
        }
    });
}