BlueJ Program To Check Duck Number

 Duck number is a number that should contains zero (s) but at the beginning there should not be any zero 1230, 10208 are examples of Duck Number but 0987 is not. This is a BlueJ Program to check whether a number is a Duck Number or not.

import java.util.*;
public class Duck
{
    Scanner sc=new Scanner(System.in);
    int c=0,len;
    String str1;
    public void takeNumber()
    {

         System.out.print("\nEnter the number:");
         str1=sc.nextLine();
         len=str1.length()-1;
         for(int i=1;i<=len;i++)
         {
              if(str1.charAt(i)=='0')
              c++;
            }
            if(str1.charAt(0)!='0' && c >0)
            System.out.print("\nEntered number is a duck number.");
            else
             System.out.print("\nEntered number is not a duck number.");
            }
            public static void main(String args[])
            {
                 Duck obj=new Duck();
                 obj.takeNumber();
                }
            }
           

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