public static void addPropertyListener(final PropertyListener listener)
   {
      SecurityManager sm = System.getSecurityManager();
      if (sm != null)
         sm.checkPropertiesAccess();
      props.addPropertyListener(listener);
   }
public static void addPropertyListener(final PropertyListener listener)
   {
      SecurityManager sm = System.getSecurityManager();
      if (sm != null)
         sm.checkPropertiesAccess();
      props.addPropertyListener(listener);
   }
public static void addPropertyListener ( final PropertyListener listener ) { SecurityManager sm = System . getSecurityManager ( ) ; if ( sm != null ) sm . checkPropertiesAccess ( ) ; props . addPropertyListener ( listener ) ; }
Add a property listener.

@param listener   Property listener to add.
Add a property listener .