How to fetch data and display on the list according many value must display from temporary value

I'm trying to display data from a database. I was able to do it, but I don't know how to only fetch data according the values I have. For example:

I have a value a = 5; then data to display will be : data1, data2, data3, data4, data5 (< display 5 data).

But I don't know how to do that. Any help is appreciated. Here is my code:

//Temporary Value     
final double a =  Math.floor(Double.parseDouble(transportResultA) / 10);
final double b =  Math.floor(Double.parseDouble(transportResultB)/10);
final double c =  Math.floor(Double.parseDouble(transportResultC)/10);

Fetch data code :

for (int i = 0; i < response.length() ; i++) {
                                try {
                                    JSONObject obj = response.getJSONObject(i);
                                    Exercise exercise = new Exercise();
                                    if (obj.getString("KindOf").equals(textKindOF.getText().toString()) && obj.getString("Type").equals("Cardio")) {
                                            exercise.setTipe(obj.getString("KindOf"));
                                            exercise.setJenis(obj.getString("Type"));
                                            exercise.setMainmuscle(obj.getString("Name"));
                                        exerciseList.add(exercise);

                                   }
                                } catch (JSONException e) {
                                    e.printStackTrace();
                                }

                            }

If I change how many data I want to fetch, I change response.length() to a data success only 5 data, but when I try to change obj.getString("Type").equals("Cardio") with other type like obj.getString("Type").equals("Strength") data didn't display. What seems to be wrong with my code?