question: private void updateCenterPanel ( ) { long now = System . currentTimeMillis ( ) ; if ( _nextUpdateTime > now ) return ; _nextUpdateTime = now + 1000 * 5 ; _centerPanel . removeAll ( ) ; _centerComponent = new JLabel ( ) ; GridBagConstraints gbc = new GridBagConstraints ( ) ; gbc . gridx = 0 ; gbc . gridy = 0 ; gbc . weightx = 0 ; gbc . fill = GridBagConstraints . NONE ; gbc . anchor = GridBagConstraints . CENTER ; _centerPanel . add ( _centerComponent , gbc ) ; refresh ( ) ; }
target:  Updates the center panel if non-PRO.  Periodically rotates between the update panel and the status link handler. 