public class ProgressGenerator extends JFrame {
protected int minValue = 0;
protected int maxValue = 100;
protected int counter = 0;
protected JProgressBar progressBar;
public ProgressGenerator() { super("JProgressBar Demo"); setSize(300, 100);
try { UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"); } catch (ClassNotFoundException e1) { // TODO Auto-generated catch block
e1.printStackTrace();
} catch (InstantiationException e1) { // TODO Auto-generated catch block
e1.printStackTrace();
} catch (IllegalAccessException e1) { // TODO Auto-generated catch block
e1.printStackTrace();
} catch (UnsupportedLookAndFeelException e1) { // TODO Auto-generated catch block
e1.printStackTrace();
}
progressBar = new JProgressBar();
progressBar.setMinimum(minValue);
progressBar.setMaximum(maxValue);
progressBar.setStringPainted(true);
progressBar.setForeground(Color.GREEN);
JButton start = new JButton("Start"); start.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { Thread runner = new Thread() { public void run() { counter = minValue;
while (counter <= maxValue) { Runnable runme = new Runnable() { public void run() { progressBar.setValue(counter);
}
};
SwingUtilities.invokeLater(runme);
counter++;
try { Thread.sleep(100);
} catch (Exception ex) { }
}
}
};
runner.start();
}
});
getContentPane().add(progressBar, BorderLayout.CENTER);
getContentPane().add(start, BorderLayout.WEST);
WindowListener wndCloser = new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0);
}
};
addWindowListener(wndCloser);
setVisible(true);
}
public static void main(String[] args) { new ProgressGenerator();
}
}
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