JTextArea: addCaretListener(CaretListener listener) : JTextArea « javax.swing « Java by API

1. Java by API
2. javax.swing
3. JTextArea

JTextArea: addCaretListener(CaretListener listener)

 
import java.awt.BorderLayout;

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);

    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());
      }
    };

    textArea.addCaretListener(listener);

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

   
  

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