Decimal to Hex

import java.util.Scanner;
public class Exercise4_11DecimalToHex {

    public static void main(String[] args) {
        Scanner kb = new Scanner(System.in);
        System.out.println("Enter a number from 0-15");
        int number = kb.nextInt();

        if (number < 0 || number > 15)
            System.out.println("invalid input");
        else if (number < 10)
            System.out.println("the hex of this number is "+number);
        else{
            char ch = (char)('A' -10 + number);
                    System.out.println("the hex of this number is "+ch);
        }

    }

}