Java sort object by list type property

Question

I have the following objects:

public class Shipping {
    String name;
    List methods;
}

public class Method {
    String serviceType;
    Strin         


        

Answer 1

You need either a comparator or implement Comparable for Method class like:

public class Method implements Comparable {
    public int compareTo(Method thatMethod) {
        return Integer.compare(Integer.parseInt(this.cost), Integer.parseInt(thatMethod.getCost()));//if you need name then you could do this.cost.compareTo(thatMethod.getServiceType()); assuming serviceType can never be null 
    }
}

And then sort your list like:

Collections.sort(methods);