question: void openPortButtonActionPerformed ( java . awt . event . ActionEvent e ) { log . info ( "Open button pushed" ) ; openPortButton . setEnabled ( false ) ; portBox . setEnabled ( false ) ; speedBox . setEnabled ( false ) ; openPort ( ( String ) portBox . getSelectedItem ( ) , "JMRI" ) ; readerThread = new Thread ( new Reader ( ) ) ; readerThread . start ( ) ; log . info ( "Open button processing complete" ) ; addUserGui ( ) ; }
target:  Open button has been pushed, create the actual display connection