question: private void profilesCB ( ) { Profile profile ; String host ; profile = ( Profile ) profilesComboBox . getSelectedItem ( ) ; if ( profile != null ) { host = profile . getHost ( ) ; serverField . setText ( host ) ; serverPortField . setText ( String . valueOf ( profile . getPort ( ) ) ) ; usernameField . setText ( profile . getUser ( ) ) ; passwordField . setText ( profile . getPassword ( ) ) ; } else { serverPortField . setText ( String . valueOf ( Profile . DEFAULT_SERVER_PORT ) ) ; usernameField . setText ( "" ) ; passwordField . setText ( "" ) ; } }
target:  Called when a profile selection is changed.