Question

I have a record object

 public Record{
   double simiADD;
 }

I Have a List of Record objects and I want to Sort on simiADD. Record with less value of simiADD should occur first and record with more value of simiADD should occur later in the sorted list. I wanted to do this operation in a seprate method and not implementing the comparator in Record class.

Answer 1

If you don’t want to define a comparison function inside the Record class:

Collections.sort(recordList, new Comparator<Record>() {
        public int compare(Record object1, Record object2) {
            return Double.compare(object1.simiADD, object2.simiADD);
        }
    }
);