如何使用subSequence过滤字符串列表，而不过滤掉长度小于subSequence要求的字符串？

import java.util.ArrayList;
import java.util.List;

public class StringFilter {
    public static List<String> filterStrings(List<String> strings, CharSequence subSequence, int minLength) {
        List<String> filteredStrings = new ArrayList<>();
        for (String str : strings) {
            CharSequence sub = str.subSequence(0, str.length());
            if (sub.length() >= minLength && sub.toString().contains(subSequence)) {
                filteredStrings.add(str);
            }
        }
        return filteredStrings;
    }

    public static void main(String[] args) {
        List<String> strings = new ArrayList<>();
        strings.add("apple");
        strings.add("banana");
        strings.add("orange");
        strings.add("grape");
        strings.add("kiwi");

        CharSequence subSequence = "an";
        int minLength = 3;

        List<String> filteredStrings = filterStrings(strings, subSequence, minLength);
        System.out.println(filteredStrings);
    }
}