单项选择题
现有:
class Pencil {
public void write (String content){ System.out.println( "Write",+content){ } }class RubberPencil extends Pencil{ public void write (String content){
System.out.println("Rubber Write"+content); }
public void erase (String content)}}
执行下列代码的结果是哪项?()
Pencil pen=new Pencil();
(( RubberPencil) pen).write( "Hello");
A.Write Hello
B.Rubber Write Hello
C.编译失败
D.运行时抛出异常