How to find division remainder using java.

import java.io.*;
class Remainder
{
public static void main(String args[])throws IOException
{
double b;
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the first number");
double a=Double.parseDouble(br.readLine());
System.out.println("Enter the second no");
b=Double.parseDouble(br.readLine());
double c=a%b;
{
System.out.println(c);
}
}
}