Test Arithmetic Java Programming Error

I have written this program but I am seeing error when I compile this program ( javac TestArithmetic.java).

1)TestArithmetic.java:26 cannot find symbol

2)symbol: class Arithmetic

3)location: class TestArithmetic

4) Arithmetic ar = new Arithmetic(x1,x2,x3);

1)TestArithmetic.java:26 cannot find symbol

2)symbol: class Arithmetic

3)location: class TestArithmetic

4) Arithmetic ar = new Arithmetic(x1,x2,x3);

2 errors.

Code :

import java.util.*;
class TestArithmetic {
public static void main (String[] args){
float number;
Scanner console= new Scanner (System.in);
System.out.println("Enter first number");

[Code] .....