Question

I’m getting a compiler error for this line:

Collections.sort(terms, new QuerySorter_TFmaxIDF(myInteger));

My customized Comparator is pretty basic; here’s the signature and constructor:

public class QuerySorter_TFmaxIDF implements Comparator<Term>{  
private int numberOfDocs;
QuerySorter_TFmaxIDF(int n){
    super();
    numberOfDocs = n;
}

}

Is there an error because I’m passing an argument into the Comparator? I need to pass an argument…

Answer 1

The problem lies with your comparator. It’s for sorting Term-s but the array you’re handing it via the Collections.sort() method has elements of type String.