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:Main.java

public static void main(String[] argv) throws Exception {
    boolean resizable = true;
    boolean closeable = true;
    boolean maximizable = true;
    boolean iconifiable = true;
    String title = "Frame Title";
    JInternalFrame iframe = new JInternalFrame(title, resizable, closeable, maximizable, iconifiable);

    iframe.setSize(300, 300);/*from  w  w  w.  jav  a 2  s  .  co m*/
    iframe.setVisible(true);
    iframe.getContentPane().add(new JTextArea());
    JDesktopPane desktop = new JDesktopPane();
    desktop.add(iframe);

    JFrame frame = new JFrame();
    frame.getContentPane().add(desktop, BorderLayout.CENTER);
    frame.setSize(300, 300);
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String[] argv) {
    JTextComponent textcomp = new JTextArea();
    final UndoManager undo = new UndoManager();
    Document doc = textcomp.getDocument();

    doc.addUndoableEditListener(new UndoableEditListener() {
        public void undoableEditHappened(UndoableEditEvent evt) {
            undo.addEdit(evt.getEdit());
        }/*from  www.  j  a va 2s  .c om*/
    });

    textcomp.getActionMap().put("Undo", new AbstractAction("Undo") {
        public void actionPerformed(ActionEvent evt) {
            try {
                if (undo.canUndo()) {
                    undo.undo();
                }
            } catch (CannotUndoException e) {
            }
        }
    });

    textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Z"), "Undo");

    textcomp.getActionMap().put("Redo", new AbstractAction("Redo") {
        public void actionPerformed(ActionEvent evt) {
            try {
                if (undo.canRedo()) {
                    undo.redo();
                }
            } catch (CannotRedoException e) {
            }
        }
    });

    textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Y"), "Redo");

    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(new JScrollPane(textcomp));
    frame.setSize(380, 320);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);

}

---

From source file:Main.java

public static void main(String[] argv) throws Exception {
    JTextComponent textcomp = new JTextArea();
    final UndoManager undo = new UndoManager();
    Document doc = textcomp.getDocument();

    JFrame f = new JFrame();
    f.add(new JScrollPane(textcomp));
    f.setSize(330, 300);//w w  w  .  ja  v  a 2  s  .c om
    f.setVisible(true);

    doc.addUndoableEditListener(new UndoableEditListener() {
        public void undoableEditHappened(UndoableEditEvent evt) {
            undo.addEdit(evt.getEdit());
        }
    });

    textcomp.getActionMap().put("Undo", new AbstractAction("Undo") {
        public void actionPerformed(ActionEvent evt) {
            try {
                if (undo.canUndo()) {
                    undo.undo();
                }
            } catch (CannotUndoException e) {
            }
        }
    });

    textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Z"), "Undo");

    textcomp.getActionMap().put("Redo", new AbstractAction("Redo") {
        public void actionPerformed(ActionEvent evt) {
            try {
                if (undo.canRedo()) {
                    undo.redo();
                }
            } catch (CannotRedoException e) {
            }
        }
    });

    textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Y"), "Redo");

}

---

From source file:Main.java

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

    JPanel controlPane = new JPanel();
    JPanel buttonPane = new JPanel();

    controlPane.setLayout(new BoxLayout(controlPane, BoxLayout.PAGE_AXIS));
    controlPane.setPreferredSize(new Dimension(200, 200));
    controlPane.add(new JScrollPane(new JTextArea()));

    buttonPane.setLayout(new FlowLayout(FlowLayout.LEFT));
    buttonPane.setPreferredSize(new Dimension(100, 40));
    buttonPane.add(new JButton("Button1"));
    buttonPane.add(new JButton("Button2"));

    frame.add(controlPane, BorderLayout.NORTH);
    frame.add(buttonPane, BorderLayout.SOUTH);

    frame.pack();//from   w  w w .  jav  a 2s . c  o  m
    frame.setVisible(true);
}

---

From source file:CutPasteSample.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Cut/Paste Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container content = frame.getContentPane();

    JTextField textField = new JTextField();
    JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);

    content.add(textField, BorderLayout.NORTH);
    content.add(scrollPane, BorderLayout.CENTER);

    Action actions[] = textField.getActions();

    Action cutAction = TextUtilities.findAction(actions, DefaultEditorKit.cutAction);
    Action copyAction = TextUtilities.findAction(actions, DefaultEditorKit.copyAction);
    Action pasteAction = TextUtilities.findAction(actions, DefaultEditorKit.pasteAction);

    JPanel panel = new JPanel();
    content.add(panel, BorderLayout.SOUTH);

    JButton cutButton = new JButton(cutAction);
    cutButton.setText("Cut");
    panel.add(cutButton);/*  ww w .j a  v a  2 s.c o  m*/

    JButton copyButton = new JButton(copyAction);
    copyButton.setText("Copy");
    panel.add(copyButton);

    JButton pasteButton = new JButton(pasteAction);
    pasteButton.setText("Paste");
    panel.add(pasteButton);

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

---

From source file:MainClass.java

public static void main(final String args[]) {
    JFrame frame = new JFrame("Undo Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);

    UndoManager manager = new UndoManager();
    textArea.getDocument().addUndoableEditListener(manager);

    JToolBar toolbar = new JToolBar();
    JButton undoButton = new JButton(
            new UndoAction(manager, (String) UIManager.get("AbstractUndoableEdit.undoText")));
    toolbar.add(undoButton);//from ww  w  .  ja va2  s  . c  om

    Container content = frame.getContentPane();
    content.add(toolbar, BorderLayout.NORTH);
    content.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);

}

---

From source file:Main.java

public static void main(String[] args) {
    JTextArea cmp = new JTextArea();
    String str = "a";
    for (int i = 0; i < 20; i++) {
        cmp.append(str + str + "\n");
    }//w w w. j a va 2  s  . c om
    JScrollPane scrollPane = new JScrollPane(cmp);
    scrollPane.setComponentZOrder(scrollPane.getVerticalScrollBar(), 0);
    scrollPane.setComponentZOrder(scrollPane.getViewport(), 1);
    scrollPane.getVerticalScrollBar().setOpaque(false);

    scrollPane.setLayout(new ScrollPaneLayout() {
        @Override
        public void layoutContainer(Container parent) {
            JScrollPane scrollPane = (JScrollPane) parent;

            Rectangle availR = scrollPane.getBounds();
            availR.x = availR.y = 0;

            Insets parentInsets = parent.getInsets();
            availR.x = parentInsets.left;
            availR.y = parentInsets.top;
            availR.width -= parentInsets.left + parentInsets.right;
            availR.height -= parentInsets.top + parentInsets.bottom;

            Rectangle vsbR = new Rectangle();
            vsbR.width = 12;
            vsbR.height = availR.height;
            vsbR.x = availR.x + availR.width - vsbR.width;
            vsbR.y = availR.y;

            if (viewport != null) {
                viewport.setBounds(availR);
            }
            if (vsb != null) {
                vsb.setVisible(true);
                vsb.setBounds(vsbR);
            }
        }
    });
    scrollPane.getVerticalScrollBar().setUI(new MyScrollBarUI());

    JFrame f = new JFrame();
    f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    f.getContentPane().add(scrollPane);
    f.setSize(320, 240);
    f.setVisible(true);
}

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From source file:MainClass.java

public static void main(final String args[]) {
    JFrame frame = new JFrame("Undo Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);

    UndoManager manager = new UndoManager();
    textArea.getDocument().addUndoableEditListener(manager);

    JToolBar toolbar = new JToolBar();
    JButton undoButton = new JButton(
            new UndoAction(manager, (String) UIManager.get("AbstractUndoableEdit.undoText")));
    toolbar.add(undoButton);//w w  w  . ja  va 2  s. c  o  m

    JButton redoButton = new JButton(
            new RedoAction(manager, (String) UIManager.get("AbstractUndoableEdit.redoText")));
    toolbar.add(redoButton);

    Container content = frame.getContentPane();
    content.add(toolbar, BorderLayout.NORTH);
    content.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);

}

---

From source file:UseActions.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Use TextAction");
    Container contentPane = frame.getContentPane();
    Dimension empty = new Dimension(0, 0);

    final JTextArea leftArea = new JTextArea();
    JScrollPane leftScrollPane = new JScrollPane(leftArea);
    leftScrollPane.setPreferredSize(empty);

    final JTextArea rightArea = new JTextArea();
    JScrollPane rightScrollPane = new JScrollPane(rightArea);
    rightScrollPane.setPreferredSize(empty);

    JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftScrollPane, rightScrollPane);

    JMenuBar menuBar = new JMenuBar();
    frame.setJMenuBar(menuBar);//from   w  w w. j a  v a 2s. c  o  m
    JMenu menu = new JMenu("Options");
    menuBar.add(menu);
    JMenuItem menuItem;

    Action readAction = leftArea.getActionMap().get(DefaultEditorKit.readOnlyAction);
    menuItem = menu.add(readAction);
    menuItem.setText("Make read-only");
    Action writeAction = leftArea.getActionMap().get(DefaultEditorKit.writableAction);
    menuItem = menu.add(writeAction);
    menuItem.setText("Make writable");

    menu.addSeparator();

    Action cutAction = leftArea.getActionMap().get(DefaultEditorKit.cutAction);
    menuItem = menu.add(cutAction);
    menuItem.setText("Cut");
    Action copyAction = leftArea.getActionMap().get(DefaultEditorKit.copyAction);
    menuItem = menu.add(copyAction);
    menuItem.setText("Copy");
    Action pasteAction = leftArea.getActionMap().get(DefaultEditorKit.pasteAction);
    menuItem = menu.add(pasteAction);
    menuItem.setText("Paste");

    contentPane.add(splitPane, BorderLayout.CENTER);
    frame.setSize(400, 250);
    frame.setVisible(true);
    splitPane.setDividerLocation(.5);
}

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From source file:EditComboBox.java

public static void main(String args[]) {
    String labels[] = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J" };
    JFrame frame = new JFrame("Editable JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    final JComboBox comboBox = new JComboBox(labels);
    comboBox.setMaximumRowCount(5);//from   w  ww .ja  v a2 s. co m
    comboBox.setEditable(true);
    contentPane.add(comboBox, BorderLayout.NORTH);

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

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            textArea.append("Selected: " + comboBox.getSelectedItem());
            textArea.append(", Position: " + comboBox.getSelectedIndex());
            textArea.append(System.getProperty("line.separator"));
        }
    };
    comboBox.addActionListener(actionListener);

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

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