Driver Class and Object Interaction

Question

Which of the following is an example of a driver class correctly calling an object class based on the notes?
 
```java
public class Driver {
    public static void main(String[] args) {
        Calculator calc = new Calculator();
        System.out.println(calc.add(5, 7));
    }
}

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

Accepted Answer

A Driver class with a main method that instantiates a Calculator object and calls its 'add' method.

Answer

A Calculator class with the main method calling its 'add' method.

Answer

A main method that attempts to call 'add' without creating a Calculator instance.

Answer

A Driver class that does not instantiate any objects.

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