Basic Text Components - The Definitive Guide to Java Swing - page 527

Listing 15-4. Accessing the System Clipboard
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.text.*;
public class CutPasteSample {
public static void main (String args[]) {
Runnable runner = new Runnable() {
public void run() {
JFrame frame = new JFrame("Cut/Paste Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JTextField textField = new JTextField();
JTextArea textArea = new JTextArea();
JScrollPane scrollPane = new JScrollPane(textArea);
frame.add(textField, BorderLayout.NORTH);
frame.add(scrollPane, BorderLayout.CENTER);
Action actions[] = textField.getActions();
Action cutAction =
TextUtilities.findAction(actions, DefaultEditorKit.cutAction);
Action copyAction =
TextUtilities.findAction(actions, DefaultEditorKit.copyAction);
Action pasteAction =
TextUtilities.findAction(actions, DefaultEditorKit.pasteAction);
JPanel panel = new JPanel();
frame.add(panel, BorderLayout.SOUTH);
JButton cutButton = new JButton(cutAction);
cutButton.setText("Cut");
panel.add(cutButton);
JButton copyButton = new JButton(copyAction);
copyButton.setText("Copy");
panel.add(copyButton);
JButton pasteButton = new JButton(pasteAction);
pasteButton.setText("Paste");
panel.add(pasteButton);