//this is s simple Java calculator for doing the basic arithametic operations

public class Calculator{

int a;

int b;

public Calculator(){

a = a;

b = b;

}

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 double divide(double a,double b){

if (b != 0){

return (a / b);

}

else{

System.out.println("Error! You cannot divide a number by zero!");

return 0;

}

}

public int modulo(int a,int b){

if (b == 0){

System.out.println("Error! Divison by Zero is not allowed!");

return 0;

}

else{

return (a % b);

}

}

public static void main(String[] args){

Calculator myCalculator = new Calculator();

System.out.println(myCalculator.add(5,7));

System.out.println(myCalculator.subtract(45,11));

System.out.println(myCalculator.multiply(14640,45454));

System.out.println(myCalculator.divide(45,0));

}

}