How to select/highlight an entire row in JTextArea

In my JTextArea, the text consists of lines of text. When I click on a particular point in the JTextArea and if there is a line of text across
that point, I want that line of text is selected and high-lighted. How
to do this?

Hi Valeriano,

Please try the following code:

Code:

---


import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
 
public class TextAreaSelectLine extends JFrame implements MouseListener
{
        JTextArea textArea;
        Action selectLine;
 
        public TextAreaSelectLine()
        {
 
                textArea = new JTextArea( "one two\nthree four", 10, 30 );
                textArea.addMouseListener( this );
 
                JScrollPane scrollPane = new JScrollPane( textArea );
                getContentPane().add( scrollPane, BorderLayout.SOUTH );
                getContentPane().add( new JTextArea() );
 
                selectLine = getAction(DefaultEditorKit.selectLineAction);
 
        }
 
        private Action getAction(String name)
        {
                Action action = null;
                Action[] actions = textArea.getActions();
 
                for (int i = 0; i < actions.length; i++)
                {
                        if (name.equals( actions[i].getValue(Action.NAME).toString() ) )
                        {
                                action = actions[i];
                                break;
                        }
                }
 
                return action;
        }
 
        public void mouseClicked(MouseEvent e)
        {
 
                if ( SwingUtilities.isLeftMouseButton(e)  && e.getClickCount() == 1)
                {
                        selectLine.actionPerformed( null );
 
 
 
                }
        }
 
        public void mousePressed(MouseEvent e) {}
        public void mouseReleased(MouseEvent e) {}
        public void mouseEntered(MouseEvent e) {}
        public void mouseExited(MouseEvent e) {}
 
        public static void main(String[] args)
        {
                TextAreaSelectLine frame = new TextAreaSelectLine();
                frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
                frame.pack();
                frame.setVisible(true);
        }
}

---

Thanks Karma, it worked perfectly ;)