convert decimal to binary

Alejandro Pulgarin :

Code is mostly done but my code is printing incorrectly its printing out as 110 as opposed to 011. The problem im doing requires to reverse the "110" to "011"

import java.util.Scanner; 

public class LabProgram {   
    public static void main(String[] args) { 

Scanner scan = new Scanner(System.in);


   int num, binaryNum = 0;
   int i = 1, rem;

   num = scan.nextInt();

   while (num != 0)
   {
      rem = num % 2;
      num /= 2;
      binaryNum += rem * i;
      i *= 10;
   }


 System.out.println(binaryNum);
}
}

WJS :

Then use a string as follows:

   int num = scan.nextInt();

   String s = "";
   while (num != 0) {
    int   rem = num % 2;
      num /= 2;
      s = s + rem; // this concatenates the digit to the string in reverse order.

      // if you want it in normal order, do it ->  s = rem + s;
   }
   System.out.println(s);