Java Swing - 如何剪切和粘貼在兩個JTextArea之間

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import java.awt.BorderLayout;
import java.awt.Container;
import java.util.Hashtable;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.text.DefaultEditorKit;
public class CutPasteSample {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Cut/Paste Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container content = frame.getContentPane();
    JTextField textField = new JTextField();
    JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);
    content.add(textField, BorderLayout.NORTH);
    content.add(scrollPane, BorderLayout.CENTER);
    Action actions[] = textField.getActions();
    Action cutAction = TextUtilities.findAction(actions,
        DefaultEditorKit.cutAction);
    Action copyAction = TextUtilities.findAction(actions,
        DefaultEditorKit.copyAction);
 
 
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