question: private void closeConnection ( ) { try { if ( pw != null ) { pw . close ( ) ; pw = null ; } if ( br != null ) { br . close ( ) ; br = null ; } if ( socket != null ) { socket . close ( ) ; socket = null ; } if ( serverSocket != null ) { serverSocket . close ( ) ; serverSocket = null ; } } catch ( IOException e ) { } }
target:  Close all current connections and IO streams