Capturar conteúdo de campo de uma Dialog

{
String x = seuTextField.getText();
JOptionPane.showMessageDialog(null,x);
}

import java.awt.<em>;

import javax.swing.</em>;

import java.awt.event.<em>;

import java.util.</em>;

import java.awt.BorderLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.Color.<em>;

//import javax.swing.</em>;

import javax.swing.table.DefaultTableModel;

import javax.swing.event.TableModelListener;

import javax.swing.event.TableModelEvent;

import javax.swing.JOptionPane;

public class TestDialog{

private Frame f;

private Button b, bd;

private Dialog d;

private TextField tf;

private Label l;

public TestDialog(){

f=new Frame(“Teste Dialog”);

b=new Button (“Clique aqui”);

f.add(b);

f.setVisible(true);

f.pack();

b.addMouseListener(new MouseAdapter(){

public void mouseClicked(MouseEvent e){
	      	d=new Dialog(f,"Dialog",true);
			d.setLayout(new GridLayout(3,1));
			tf=new TextField("");
			l=new Label("Escreva algo no campo acima");
			bd=new Button("OK");
			d.add(tf);
			d.add(l);
			d.add(bd);

			d.pack();
			d.setVisible(true);
							bd.addActionListener(new MyActionListener());
			

			
			


			d.addWindowListener(new WindowAdapter() {
        			public void windowClosing(WindowEvent e){
        			
					d.setVisible(false);
			
        			}
     			}); 

			//bd.addActionListener(

      	}
		});
	
	
}
public static void main(String args[]){
	TestDialog td=new TestDialog();
}

import java.awt.event.<em>;

import java.util.</em>;

import java.awt.BorderLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

public class MyActionListener implements ActionListener

{ public void actionPerformed(ActionEvent evt)

{

System.out.println(“Teste”);

}

}

bd.addActionListener( new ActionListener()
                               {
                                  public
                                  void actionPerformed(ActionEvent ev)
                                  {
                                   JOptionPane.showMessageDialog(null,tf.getText());
                                  }
                                }
                         );