Listen to Caret event with CaretListener for JTextArea in Java
Description
The following code shows how to listen to Caret event with CaretListener for JTextArea.
Example
import java.awt.BorderLayout;
import java.awt.Container;
/*w w w . j a v a 2s .c o m*/
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
public class Main {
public static void main(String args[]) {
JFrame frame = new JFrame("Caret Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container content = frame.getContentPane();
JTextArea textArea = new JTextArea();
JScrollPane scrollPane = new JScrollPane(textArea);
content.add(scrollPane, BorderLayout.CENTER);
CaretListener listener = new CaretListener() {
public void caretUpdate(CaretEvent caretEvent) {
System.out.println(caretEvent.getDot());
System.out.println(caretEvent.getMark());
}
};
textArea.addCaretListener(listener);
frame.setSize(250, 150);
frame.setVisible(true);
}
}
The code above generates the following result.
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