SCJP題庫第030題

1. public class SimpleCalc{

2.   public int value;

3.   public void calculate(){value += 7;}

4. }

And:

1. public class MultiCalc extends SimpleCalc{

2.   public void calculate(){value -= 3;}

3.   public void calculate(int multiplier){

4.     calculate();

5.     super.calculate();

6.     value *= multiplier;

7.   }

8.   public static void main(String[] args){

9.     MultiCalc calculator = new MultiCalc();

10.    calculator.calculate(2);

11.    System.out.println("Value is: " + calculator.value);

12.   }

13. }

What is the result?

A. Value is: 8

B. Compilation fails.

C. Value is: 12

D. Value is: -12

E. The code runs with no output.

F. An exception is thrown at runtime.

Ans:A

解說:無