GTK L&F doesn't have hotkeys in jdk7 b141, while b139 has.



try testcase: 

import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

public final class JOptionPaneTest extends JPanel {
    public static void main(final String[] args) throws Exception {
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel");
        SwingUtilities.invokeAndWait(new Runnable() {
            @Override public void run() {
                JOptionPane.showInputDialog(null, "Alt+C close this dialog?");
            }
        });
    }
}