Increasing / Decreasing / Bouncy Number

/**
 * This program inputs a number and checks whether the number entered is an increasing number, a decreasing number or a bouncy number.
 * For more information, please visit: https://goo.gl/L5YfXo
 */
import java.util.Scanner;
public class Bouncy_Number
{
    static boolean isIncreasing(int num)
    {
        String a = Integer.toString(num);
        int i,x,y,flag=1;
        for(i=1;i<a.length();i++)
        {
            x=Character.getNumericValue(a.charAt(i));
            y=Character.getNumericValue(a.charAt(i-1));
            if(x < y)
            {
                flag = 0;
                break;
            }
        }

        if(flag == 1)
            return true;
        else
            return false;
    }

    static boolean isDecreasing(int num)
    {
        String a = Integer.toString(num);
        int i,x,y,flag=1;
        for(i=0;i<a.length()-1;i++)
        {
            x=Character.getNumericValue(a.charAt(i));
            y=Character.getNumericValue(a.charAt(i+1));
            if(x < y)
            {
                flag = 0;
                break;
            }
        }

        if(flag == 1)
            return true;
        else
            return false;
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter a number.");
        int num = sc.nextInt();
        if(num >= 100) //Since there can't be any bouncy numbers lesser than 100.
        {
            boolean check1 = isIncreasing(num);
            boolean check2 = isDecreasing(num);
            if(check1 && check2 == false) //Only increasing
                System.out.println(num+" is increasing and not a bouncy number");
            else if(check1 == false && check2) //Only decreasing
                System.out.println(num+" is decreasing and not a bouncy number.");
            else
                System.out.println(num+" is a bouncy number.");
        }
        else
            System.out.println("Incorrect input. Please enter a number exceeding 100.");

        sc.close();
    }
}