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(int rows, int columns)

Source Link

Document

Constructs a new empty TextArea with the specified number of rows and columns.

Usage

From source file:Main.java

public Main() {
    JTextArea area = new JTextArea(5, 20);
    area.setText("this is a test.");
    String charsToHighlight = "aeiouAEIOU";
    Highlighter h = area.getHighlighter();
    h.removeAllHighlights();//from  www .  j a  v a 2s.  com
    String text = area.getText().toUpperCase();
    for (int i = 0; i < text.length(); i += 1) {
        char ch = text.charAt(i);
        if (charsToHighlight.indexOf(ch) >= 0)
            try {
                h.addHighlight(i, i + 1, DefaultHighlighter.DefaultPainter);
            } catch (Exception ble) {
            }
    }
    this.getContentPane().add(area);

}

From source file:Main.java

public Main() {
    setPreferredSize(new Dimension(200, 250));
    console = new JTextArea(15, 15);

    vertical = new JScrollPane(console);
    vertical.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
    add(vertical);/*from www  . j  av a 2  s. c  om*/
}

From source file:Main.java

public Main() {
    JPanel textPanel = new JPanel();
    textPanel.setLayout(new BoxLayout(textPanel, BoxLayout.PAGE_AXIS));

    firstTextArea = new JTextArea(10, 50);
    secondTextArea = new JTextArea(10, 50);

    textPanel.add(new JScrollPane(firstTextArea));
    textPanel.add(new JScrollPane(secondTextArea));

    testFrame.add(textPanel, BorderLayout.CENTER);

    copyTextButton = new JButton("Copy text");
    copyTextButton.addActionListener(e -> copyText());
    testFrame.add(copyTextButton, BorderLayout.SOUTH);
}

From source file:Main.java

/** 
 * Adds a <code>JTextArea</code> with the specified text as a label
 * appearing before the text field to the given <code>JComponent</code>. 
 * Assuming the <code>JComponent</code> has the MigLayout set, the label
 * and text field are both left aligned within the <code>JComponent</code>.
 * If the wrap parameter is set to true, MigLayout's "wrap" attribute will be
 * applied to the <code>JTextField</code>, meaning the next component added
 * will appear on the next line.//w w  w.ja  v  a 2s.co m
 * (Exception: Will not work if MigLayout's flowy layout constraint is applied,
 * but it is rarely used MigLayout feature and thus not a common concern; however
 * if you have set this layout constraint on your <code>JComponent</code> do not
 * attempt to use the wrap option of this method.)
 * @param label - the text to appear in front of the text field
 * @param rows - the length in rows of the text field 
 * @param cols - the length in columns of the text field
 * @param wrap - indicates is this component should be the last on the current line
 * @return the <code>JTextArea</code> added to the component
 */
public static JTextArea addLabeledTextArea(JComponent c, String label, int rows, int cols, boolean wrap) {
    JLabel l = new JLabel(label);
    c.add(l, "align left");

    JTextArea text = new JTextArea(rows, cols);
    if (wrap) {
        c.add(text, "align left, wrap");
    } else {
        c.add(text, "align left");
    }

    return text;
}

From source file:Main.java

void initUI() {
    JFrame frame = new JFrame(Main.class.getSimpleName());
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    textArea = new JTextArea(24, 80);
    save = new JButton("Save to file");
    save.addActionListener(e -> saveToFile());
    frame.add(new JScrollPane(textArea));
    JPanel buttonPanel = new JPanel();
    buttonPanel.add(save);// www . java 2  s  .  c  o m
    frame.add(buttonPanel, BorderLayout.SOUTH);
    frame.setSize(500, 400);
    frame.setVisible(true);
}

From source file:ImageLoader.java

public ImageLoader() {
    super("Image Loader");

    this.log = new JTextArea(4, 4);
    this.viewer = new JPanel();

    JButton start = new JButton("Start");
    start.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            String[] files = new String[] { "Bodie_small.png", "Carmela_small.png", "Death Valley_small.png",
                    "Lake_small.png" };
            new ImageLoadingWorker(log, viewer, files).execute();
        }/*from   www  . j av  a 2  s.c om*/
    });

    add(new JScrollPane(log), BorderLayout.NORTH);
    add(new JScrollPane(viewer), BorderLayout.CENTER);
    add(start, BorderLayout.SOUTH);

    setSize(360, 280);
}

From source file:Main.java

public Main() {
    Box b = Box.createHorizontalBox();
    b.add(new JScrollPane(t1));
    copy.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            t2.setText(t1.getSelectedText());
        }//w  w  w  .j  a v a2s .  co  m
    });
    b.add(copy);

    t2 = new JTextArea(10, 15);
    t2.setEditable(false);
    b.add(new JScrollPane(t2));

    add(b);
    setSize(425, 200);
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

From source file:Main.java

public Main() {
    JPanel jp = new JPanel();
    jp.setLayout(new BorderLayout());
    final JTabbedPane tb = new JTabbedPane();
    JButton btn = new JButton("push me !!!");
    btn.addActionListener(e -> {/*from   w ww  .j a v a 2  s .  c o m*/
        tb.setEnabledAt(1, true);
        tb.setEnabledAt(2, true);
        tb.setEnabledAt(3, true);
        tb.setEnabledAt(4, true);
    });
    JPanel pnl = new JPanel();
    pnl.add(btn);
    tb.add("Tab1", pnl);
    tb.add("Tab2", new JTextArea(10, 20));
    tb.add("Tab3", new JTextArea(10, 20));
    tb.add("Tab4", new JTextArea(10, 20));
    tb.add("Tab5", new JTextArea(10, 20));
    jp.add(tb, BorderLayout.CENTER);
    tb.setEnabledAt(1, false);
    tb.setEnabledAt(2, false);
    tb.setEnabledAt(3, false);
    tb.setEnabledAt(4, false);
    JFrame frame = new JFrame();
    frame.setLayout(new BorderLayout());
    frame.add(jp, BorderLayout.CENTER);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
}

From source file:Main.java

public Main() {
    super(new BorderLayout());
    JProgressBar progressBar = new JProgressBar(0, 100);
    progressBar.setValue(0);//ww w  .j a v a2 s  . c  om
    progressBar.setStringPainted(true);

    taskOutput = new JTextArea(5, 20);
    taskOutput.setEditable(false);

    startButton = new JButton("Start");
    startButton.setActionCommand("start");
    startButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent ae) {
            startButton.setEnabled(false);
            setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));

            final Task task = new Task();
            task.addPropertyChangeListener(new PropertyChangeListener() {
                @Override
                public void propertyChange(PropertyChangeEvent pce) {
                    if ("progress".equals(pce.getPropertyName())) {
                        int progress = (Integer) pce.getNewValue();
                        progressBar.setValue(progress);
                        taskOutput.append(String.format("Completed %d%% of task.\n", task.getProgress()));
                    }
                }
            });
            task.execute();
        }
    });

    JPanel panel = new JPanel();
    panel.add(startButton);
    panel.add(progressBar);

    add(panel, BorderLayout.PAGE_START);
    add(new JScrollPane(taskOutput), BorderLayout.CENTER);

}

From source file:Main.java

public Console() {
    JTextArea textArea = new JTextArea(24, 80);
    textArea.setBackground(Color.BLACK);
    textArea.setForeground(Color.LIGHT_GRAY);
    textArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
    System.setOut(new PrintStream(new OutputStream() {
        @Override//from  ww  w.j  a  va 2  s.c o  m
        public void write(int b) throws IOException {
            textArea.append(String.valueOf((char) b));
        }
    }));
    frame.add(textArea);
}