Java Swing - Getting notifications on cut, copy, and paste actions for text components.

[Updated: May 25, 2018, Created: May 25, 2018]

Following code shows how to get notified on copy, paste or cut actions for a JTextComponent. In other words this will intercept cut/copy/paste actions.

package com.logicbig.example;

import javax.swing.*;
import javax.swing.text.JTextComponent;
import java.awt.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.util.function.BiConsumer;

public class CutCopyPasteListenerUtil {
  public static final String COPY = "COPY";
  public static final String CUT = "CUT";
  public static final String PASTE = "PASTE";

  public static void addCutCopyPasteInterceptor(JTextComponent tc, BiConsumer<String, String> listener) {

      tc.registerKeyboardAction(ae -> handlePaste(tc, listener),
              KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_DOWN_MASK), JComponent.WHEN_FOCUSED);

      tc.registerKeyboardAction(ae -> handleCopy(tc, listener),
              KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_DOWN_MASK), JComponent.WHEN_FOCUSED);

      tc.registerKeyboardAction(ae -> handleCut(tc, listener),
              KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_DOWN_MASK), JComponent.WHEN_FOCUSED);

  private static void handlePaste(JTextComponent tc,
                                  BiConsumer<String, String> listener) {
      try {
          String s = (String) Toolkit.getDefaultToolkit()
          listener.accept(PASTE, s);

      } catch (Exception e) {

  private static void handleCopy(JTextComponent tc, BiConsumer<String, String> listener) {
      String s = tc.getSelectedText();
      listener.accept(COPY, s);

  private static void handleCut(JTextComponent tc, BiConsumer<String, String> listener) {
      String s = tc.getSelectedText();
      listener.accept(CUT, s);

  public static void main(String[] args) {
      JTextArea ta = new JTextArea(5, 5);
      addCutCopyPasteInterceptor(ta, (type, text) -> {
          System.out.printf("action type: %s, action text: %s %n", type, text);
      JFrame frame = createFrame("Intercepting cut copy paste");
      frame.add(new JScrollPane(ta));

  public static JFrame createFrame(String title) {
      JFrame frame = new JFrame(title);
      frame.setSize(new Dimension(800, 700));
      return frame;

Example Project

Dependencies and Technologies Used:

  • JDK 10
  • Maven 3.3.9

Intercepting cut, copy, and paste actions Select All Download
  • swing-cut-copy-paste-notifications
    • src
      • main
        • java
          • com
            • logicbig
              • example

    See Also