java - SqLite: Cursor does not increment correctly -

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i having issue cursor's respective while loop not running. cursor.columncount() returns appropriate amount of columns. there errors in how increment cursor?

a pictoral view (column returned):

|rating| |2     | |3     | |6     |

function should return 11/3 (3.66666)

public double getaveragerating(string title) {         title = title.touppercase();         int rating = 0;         int count = 1;         sqlitedatabase db = this.getreadabledatabase();         string str = "select rating " + table_name + " title=" + "'" + title + "'" + ";";         cursor cur = db.rawquery(str, null);         while(cur.movetonext()) {             int b = integer.parseint(cur.getstring(cur.getcolumnindex("rating")));             rating += b;             count++;         }         cur.close();         return (double) rating/count;         //return rating;     }


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