question: @ Override public void readExternal ( ObjectInput in ) throws IOException , ClassNotFoundException { super . readExternal ( in ) ; int k_max = in . readInt ( ) ; knnDistances = new double [ k_max ] ; for ( int i = 0 ; i < k_max ; i ++ ) { knnDistances [ i ] = in . readDouble ( ) ; } }
target:  Calls the super method and reads the parameter k_max and knn distance of this entry from the specified input stream.