How do I gray out components, and prevent users from using them?
Every AWT & Swing component inherits methods that will enable and disable
setEnabled(boolean) method allows a component
to be disabled, and later enabled. Previously, AWT components could be enabled
and disabled by calling their enable() and disable() methods. However, these
methods have been deprecated, and should no longer been used.
// Disable button (b) b.setEnabled ( false );
// Enable button (b) b.setEnabled ( true );