Decimal-to-Hexadecimal converter (java)

import java.util.Scanner;

public class DecHex {
    public static void main(String [] args) {
        Convert number=new Convert(); //instanciation of the objet number
        String res=""; //declaration of the string to show the result
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter the decimal number to be converted");
        String decimal=sc.nextLine();
        if(number.verifBase10(decimal)) {
       int number1=number.toInt(decimal); //Conversion of the string in to number
       res=number.ToHexa(number1);   
       System.out.println("Here is the hexidecimal value: "+res);
       }
        else {
            System.out.println("Error. Please check the number you have entered");
        }
      }
}
class Convert{

    boolean verifBase10(String sDecimal) // method which test the entered number
    {
       boolean test = true;
       String chiffreDecimal= "0123456789";
       if(sDecimal.length() == 0) 
       return false;
       for(int i = 0; i < sDecimal.length() ;i++)
       if(chiffreDecimal.indexOf(sDecimal.charAt(i)) == -1) 
       {
          test = false;
          break;
       }
         return test;
    }

    int toInt(String number) {
       int num=Integer.parseInt(number);

       return num;
   }

   String ToHexa(int num) {
       int rem;
       String str2="";
       char hex[]= {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
       while(num >0 && num<=65535)
       {
           rem=num%16;
           str2=hex[rem]+str2;  //conversion in hexadecimal code
           num=num/16;
       }
       return str2;
   }
}