Archivo2.java

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

public class Archivo2 extends JFrame {

    private JButton buttonBrowse;

    public Archivo2() {
//      super("Save File Dialog Example");
//      setLayout(new FlowLayout());
//      buttonBrowse = new JButton("Save...");
//      buttonBrowse.addActionListener(new ActionListener() {
//
//          public void actionPerformed(ActionEvent arg0) {
//      String z="";
//              z=showSaveFileDialog();
//          }
//      });
//      getContentPane().add(buttonBrowse);
//      setSize(300, 100);
//      setLocationRelativeTo(null);
//      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//      setVisible(true);
    }

    public static void main(String[] args) {
//        try {
//            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//        } catch (Exception e) { }
//
//        SwingUtilities.invokeLater(new Runnable() {

//          public void run() {
//              new Archivo2();
////            }
//      });
    }

    public String showSaveFileDialog()
    {
        String dir="";
        JFileChooser fileChooser = new JFileChooser();
        fileChooser.setDialogTitle("Specify a file to save");

        int userSelection = fileChooser.showSaveDialog(this);
        if (userSelection == JFileChooser.APPROVE_OPTION) {
            File fileToSave = fileChooser.getSelectedFile();
            System.out.println("Save as file: " + fileToSave.getAbsolutePath());
            dir=fileToSave.getAbsolutePath();
        }
        return dir;
    }
}