List<String> names = Arrays.asList("dabin", "tyson", "sophia");

Collections.sort(names, new Comparator<String>() {
    @Override
    public int compare(String a, String b) {
        return b.compareTo(a);
    }
});

List<String> names = Arrays.asList("dabin", "tyson", "sophia");

Collections.sort(names, (String a, String b) -> b.compareTo(a)); //简化写法一
names.sort((a, b) -> b.compareTo(a)); //简化写法二，省略入参类型，Java 编译器能够根据类型推断机制判断出参数类型