试题详情
单项选择题 class A {   public int getNumber(int a) {   return a + 1;   }   }    class B extends A {   public int getNumber (int a) {   return a + 2   }    public static void main (String args) {   A a = new B();   System.out.printIn(a.getNumber(0));   }   }   What is the result? () 

A、 Compilation succeeds and 1 is printed.

B、 Compilation succeeds and 2 is printed.

C、 An error at line 8 causes compilation to fail.

D、 An error at line 13 causes compilation to fail.

E、 An error at line 14 causes compilation to fail.

  • B
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