Adicionando um JButton dentro de um JTextFiel - Java

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1. import java.awt.BorderLayout;  
2. import java.awt.Component;  
3. import java.awt.event.ActionEvent;  
4. import java.awt.event.ActionListener;  
5.   
6. import javax.swing.JButton;  
7. import javax.swing.JFrame;  
8. import javax.swing.JTextField;  
9.   
10. public class JButtonTextField {  
11.     public static void main(String[] args) {  
12.         JFrame frame = new JFrame("JButtonTextField");  
13.         JTextField field = new JTextField(30);  
14.         JButton button = new JButton("Button");  
15.         field.setLayout(new BorderLayout());  
16.         field.add(button,BorderLayout.EAST);  
17.         field.setText("JButtonTextField");  
18.         frame.getContentPane().add(field);  
19.         frame.pack();  
20.         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
21.         frame.setVisible(true);  
22.           
23.         button.addActionListener(new ActionListener(){  
24.             public void actionPerformed(ActionEvent event){  
25.                 Component parent = ((JButton)event.getSource()).getParent();  
26.                 ((JTextField)parent).setText("Button Pressed");  
27.             }  
28.         });  
29.     }  
30. }  

Resultado: