question: public Row ( DataInput is ) throws IOException { for ( int i = is . readInt ( ) ; i > 0 ; i -- ) { char ch = is . readChar ( ) ; Cell c = new Cell ( ) ; c . cmd = is . readInt ( ) ; c . cnt = is . readInt ( ) ; c . ref = is . readInt ( ) ; c . skip = is . readInt ( ) ; cells . put ( ch , c ) ; } }
target:  Construct a Row object from input carried in via the given input stream.