Simple decimal to binary converter

decimal_binary.java

import java.util.Scanner;
public class sdz {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int nbrTodiv, modDiv,tmp;
        String result ="";
        System.out.println("Entrez le nombre à convertir ");

        nbrTodiv = sc.nextInt();
        tmp = nbrTodiv;

       while (nbrTodiv >= 1){

           modDiv = nbrTodiv%2;
           result = String.valueOf(modDiv)+result;
           nbrTodiv =  nbrTodiv/2;
       }
      switch(result.length()) {
          case 1:
              result = "000"+ result;
              break;
          case 2:
              result = "00"+result;
              break;
          case 3:
              result = "0"+result;
              break;

      }

       System.out.println("La conversion en binaire de " + tmp + " donner " + result );