zhoujinl

import java.util.Comparator;
import java.util.stream.Collectors;

public class DescendingOrder {
    public static int sortDesc(final int num) {
        return Integer.parseInt(String.valueOf(num)
                                      .chars()
                                      .mapToObj(i -> String.valueOf(Character.getNumericValue(i)))
                                      .sorted(Comparator.reverseOrder())
                                      .collect(Collectors.joining()));