convert decimal to binary

public class Solution {
    public static void main(String[] args) {
        int dNum = 1264;
        String str = "";
        while (dNum > 0) {
            int rem = dNum % 2;
            str = rem + str;
            dNum = dNum / 2;
        }
        System.out.println("Binary value is: " + str);
    }
}



OUTPUT:
Binary value is: 10011110000