///a calculator class the performs simple math.
public class Calculator{

public Calculator(){

}

public int add(int a,int b){
return a +b;
}

public int subtract(int a,int b){
return a - b;
}

public int multiply(int a,int b){
return a * b;
}

public int divide(int a,int b){
return a / b;
}

public int modulo(int a,int b){
return a % b;
}

public static void main(String[] args){

Calculator myCaculator = new Calculator();
System.out.println(myCaculator.add(5,7));
System.out.println(myCaculator.subtract(45,11));
}
}