import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.filechooser.*;

public class FileChooserDemo extends JFrame {

    private JTextArea log;
    private JFileChooser filechooser = new JFileChooser();

    private String newline = System.getProperty("line.separator");

    public FileChooserDemo() {
	super("FileChooserDemo");

	JButton openButton = new JButton("Open", new ImageIcon("images/open.gif"));
	openButton.addActionListener(new OpenListener());

	JButton saveButton = new JButton("Save", new ImageIcon("images/save.gif"));
	saveButton.addActionListener(new SaveListener());

	JPanel buttonPanel = new JPanel();
	buttonPanel.add(openButton);
	buttonPanel.add(saveButton);

	log = new JTextArea(5,20);
	log.setMargin(new Insets(5,5,5,5));
	JScrollPane logScrollPane = new JScrollPane(log);

	Container contentPane = getContentPane();
	contentPane.add(buttonPanel, BorderLayout.NORTH);
	contentPane.add(logScrollPane, BorderLayout.CENTER);
    }

    private class OpenListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
	    int returnVal = filechooser.showOpenDialog(FileChooserDemo.this);

	    if (returnVal == JFileChooser.APPROVE_OPTION) {
	        File file = filechooser.getSelectedFile();
		//this is where a real application would open the file.
	        log.append("Opening: " + file.getName() + "." + newline);
	    } else {
	        log.append("Open command cancelled by user." + newline);
	    }
	}
    }

    private class SaveListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
	    int returnVal = filechooser.showSaveDialog(FileChooserDemo.this);

	    if (returnVal == JFileChooser.APPROVE_OPTION) {
	        File file = filechooser.getSelectedFile();
		//this is where a real application would save the file.
	        log.append("Saving: " + file.getName() + "." + newline);
	    } else {
	        log.append("Save command cancelled by user." + newline);
	    }
	}
    }

    public static void main(String s[]) {
        JFrame frame = new FileChooserDemo();

        WindowListener l = new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        };
        frame.addWindowListener(l);

        frame.pack();
        frame.setVisible(true);
    }
}