Write a program in java to count no. of Rs 50,20,10,5,2 and 1 notes in certain amount

import java.util.Scanner;
class count_notes
{
public static void main(String[]args)
{
Scanner ob=new Scanner(System.in);
System.out.println("Enter Rs to be counted in Rs 50,20,10,5,2 and 1 notes below Rs 1000000");
int n=ob.nextInt();
int a=n;
if (n>0 && n<1000000)
{
n=a/50;
a=a-(n*50);
if (n>0)
{
System.out.println("No. of Rs 50 notes  "+n);
}
n=a/20;
a=a-(n*20);
if (n>0)
{
System.out.println("No. of Rs 20 notes  "+n);
}
n=a/10;
a=a-(n*10);
if (n>0)
{
System.out.println("No. of Rs 10 notes  "+n);
}
n=a/5;
a=a-(n*5);
if (n>0)
{
System.out.println("No. of Rs 5 notes  "+n);
}
n=a/2;
a=a-(n*2);
if (n>0)
{
System.out.println("No. of Rs 2 notes  "+n);
}
n=a/1;
a=a-(n*1);
if (n>0)
{
System.out.println("No. of Rs 1 notes  "+n);
}
}
else
{
System.out.println("Don/'t do wrong input");
}
}
}


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