带有自定义比较器的Java排序列表

Question

I have my class :

public class Vehicle implements Comparable<Vehicle> {

....

 @Override
    public int compareTo(Vehicle o) {

       if (o.dataMatricula.compareTo(dataMatricula) ==0){
            return matricula.compareTo(o.matricula);   

        }
        else {
            return o.dataMatricula.compareTo(dataMatricula);
        }

...

}

And i'm trying to sort an array of Vehicle with a custom comparator from the class:

class CompararVehicle implements Comparator<Vehicle> {

    @Override
    public int compare(Vehicle o1, Vehicle o2) {
        if (o1 == o2) {
            return 0;
        }

        if(o2.getDataMatricula().compareTo(o1.getDataMatricula())==0){
            if(o1.getMatricula().compareTo(o2.getMatricula())==0){
                return 0;
            }
            else {
                   return o1.getMatricula().compareTo(o2.getMatricula());
            }
        }


        else {
            return o2.getDataMatricula().compareTo(o1.getDataMatricula());
        }

    }
}

But i get an error when I try to do this :

Arrays.sort(MyListofVehicle, new CompararVehicle());

Edit: MyListOfVehicle is a variable List<Vehicle> The error i get from NetBeans is :

error: no suitable method found for sort(List,CompararVehicle) Arrays.sort(llVeh, new CompararVehicle()); method Arrays.sort(T#1[],Comparator) is not applicable (cannot infer type-variable(s) T#1

It's the fact that i already have a compareTo in my class "vehicle" interfering when I try to order the array with another standard? If so, how can i order by the new standard?

Answer 1

Your MyListofVehicle is a List (List) not an array so uyou cant use Arrays.sort method try this

Collections.sort(MyListofVehicle, new CompararVehicle());

or you can do something like this

Arrays.sort(MyListofVehicle.toArray(new Vehicle[0]), new CompararVehicle());