question: private static void deserializeCache ( File input ) { { if ( null == instance && readCache && input . canRead ( ) ) { try { ObjectInputStream objIn = new ObjectInputStream ( new FileInputStream ( input ) ) ; instance = ( AbcDataCache ) objIn . readObject ( ) ; objIn . close ( ) ; instance . file = input ; } catch ( java . io . InvalidClassException incompatible_serialized_class ) { } catch ( Exception ex ) { ex . printStackTrace ( ) ; } } if ( null == instance ) instance = new AbcDataCache ( input ) ; } }
target:  Deserialize the AbcDataCache if feasible.