Java数组排序，无法弄清楚我在这里做错了什么

Question

我陷入了这种困境。我无法弄清楚我在做什么错。任何帮助，将不胜感激。在Collections中遇到案例3、4和5的错误。排序。

Collections类型的sort（List，Comparator）方法不适用于参数（Lead []，Sort.SortByName）

Pages.java

            case 0: 
                mainMenu(leadArray);
                menuSelect = -1;
                break;
            case 1:
                newLead( leadArray );
                menuSelect = -1;
                break;
            case 2: 
                System.out.println( "\nEnter Lead ID: ");
                leadSelect = input.nextInt();
                viewLead( leadSelect, leadArray );
                menuSelect = -1;
                break;
            case 3:
                Collections.sort(leadArray,new Sort.SortByName());
                menuSelect = -1;
                break;
            case 4:
                Collections.sort(leadArray,new Sort.SortByStatus());
                menuSelect = -1;
                break;
            case 5:
                Collections.sort(leadArray,new Sort.SortByRating());
                menuSelect = -1;
                break;
            default:
                System.out.println( "Invalid menu selection!\nPlease try again.");          
            } // end switch menuSelectr code here

Sort.java

 public class Sort {

    class SortByName implements Comparator<Lead>
    {
        @Override
        public int compare(Lead a, Lead b) 
        {
            return a.getName().compareTo(b.getName());
        } // end compare name   
    } // end SortByName

    class SortByStatus implements Comparator<Lead>
    {
        @Override
        public int compare(Lead a, Lead b) 
        {   
            return a.getStatus().compareTo(b.getStatus());
        } // end compare status
    } // end SortByStatus

    class SortByRating implements Comparator<Lead>
    {

        @Override
        public int compare(Lead a, Lead b) 
        {   
            return a.getRating() - b.getRating();
        } // end compare rating 
    } // end SortbyRating

}