给定以下程序 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){ System.out.println( "Erase "+content); } } 执行下列代码的结果是哪项? Pencil p=new Pencil(); (( RubberPencil) p).write("Hello");