question: @ Override public void actionPerformed ( ActionEvent event ) { String command = event . getActionCommand ( ) ; if ( command . equals ( "SelectLabelFont" ) ) { attemptLabelFontSelection ( ) ; } else if ( command . equals ( "SelectLabelPaint" ) ) { attemptModifyLabelPaint ( ) ; } else if ( command . equals ( "SelectTickLabelFont" ) ) { attemptTickLabelFontSelection ( ) ; } }
target:  Handles user interaction with the property panel.