欲对数组进行忽略大小写的排序，出错

Question

 package collection;

import java.util.*;

class  MyCompartor implements Comparator<String>
{
     public int compare(String s1,String s2) {
         return s1.compareToIgnoreCase(s2);  
          }

}
public class SetDemo {

    public static void main(String[] args) {
        String strBefor[] = {"abcdd","abcd","ab","AB","abc"}; 
        List <String> aslist=Arrays.asList(strBefor);
        HashSet<String> set=new HashSet<String>(new MyCompartor());
        for(String s:strBefor)
        {
            set.add(s);
        }
        strBefor=set.toArray(new String[set.size()]);
        Arrays.sort(strBefor);
        for(String s:strBefor){
            System.out.println(s);
        }
    }
}

eclipse在

 HashSet<String> set=new HashSet<String>(new MyCompartor());

提示错误，请问如何修改呢

Exception in thread "main" java.lang.Error: Unresolved compilation problem:
The constructor HashSet(MyCompartor) is undefined
感谢各位，但是我想要的运行结果是：ab和AB只保留一个（即利用HashSet去掉重复元素，元素不分大小写），在我的理解中sort是对去掉重复元素的数组进行排序

Answer 1

1， 一个java文件最多只能有一个public 修饰的class 去掉一个public