class Top { static int x = 1; public Top(int y) { x *= 3; } } class Middle extends Top { public Middle() { x += 1; } public static void main(String [] args) { Middle m = new Middle(); System.out.println(x); } } 结果为:()
- A、1
- B、2
- C、3
- D、编译失败
正确答案:D
答案解析:有
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