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import java.awt.*;
import java.awt.event.*;
import java.io.*;
 
import javax.swing.*;
 
import org.jdesktop.swingworker.SwingWorker;
 
 
public class GetFile extends JFrame {
 
	private JButton jbGo;
 
	private JTextArea jtaLog;
 
	class LoadExcelTask extends SwingWorker<Void, Void> {
 
		@Override
		public Void doInBackground() {
			go1();
			go2();
			return null;
		}
 
 
		@Override
		public void done() {
			jtaLog.append("Fini !\n");
			jbGo.setEnabled(true);
		}
	}
 
	public GetFile() {
		setSize(300, 200);
		Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
		setLocation((screen.width - this.getSize().width) / 2,
				(screen.height - this.getSize().height) / 2);
		setContentPane(getJDesktopPane());
		setVisible(true);
	}
 
	private JDesktopPane getJDesktopPane() {
		final JDesktopPane jdp = new JDesktopPane();
		JPanel jp = new JPanel();
		jp.setSize(300, 200);
		jp.setLocation(new java.awt.Point(1, 1));
		jbGo = new JButton("Go !");
		jp.add(jbGo, BorderLayout.CENTER);
 
		jtaLog = new JTextArea(5, 20);
		jtaLog.setMargin(new Insets(5, 5, 5, 5));
		jtaLog.setEditable(false);
 
		jp.add(new JScrollPane(jtaLog), BorderLayout.SOUTH);
		jp.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
 
 
		jbGo.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				jbGo.setEnabled(false);
				new LoadExcelTask().execute();
			}
		});
		jdp.add(jp);
		jdp.setVisible(true);
		jdp.updateUI();
		return jdp;
	}
 
	private void go1() {
 
		try {
			jtaLog.append(String.format("Téléchargement du fichier XLS\n"));
			Thread.sleep(1000);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
 
	private void go2() {
		try {
			jtaLog.append(String.format("Ouverture du fichier XLS\n"));
			Thread.sleep(1000);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
 
	}
 
	public static void main(String[] args) throws IOException {
		JFrame.setDefaultLookAndFeelDecorated(true);
		new GetFile();
	}
} | 
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