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import java.io.*;

class NumberZero extends Exception

{

      NumberZero()

      {}

}


class Number

{

      static int no;

      Number() throws IOException

      {

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            System.out.println("Enter no");

            no=Integer.parseInt(br.readLine());

            try

            {  
   if(no==0)

                  {

                  throw new NumberZero();

                  }

            cal();

            }//end of try

            catch(NumberZero e)

            {

                  System.out.println("no is zero");

            }

      }

      void cal() 

      {   
  int l=0,r=0;

            l = no%10;

            //System.out.println("no = "+no);

            if(no>9)

            {

                  while(no>0)

                  {

                  r = no%10

                  }

            System.out.println("Addotion of first and last digit = "+(l+r));

                 
            }

            else

            System.out.println("Addotion of first and last digit = "+l);

      }

}


class Slip19

{

      public static void main(String a[]) throws IOException

      {   
  Number n= new Number();

      }

}

19) Write a java program to accept a number from the user, if number is zero then throw user defined Exception “Number is 0” otherwise calculate the sum of first and last digit of a given number (Use static keyword).

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