day10
.....\abs
.....\...\Rect.java
.....\...\Shape.java
.....\...\ShapeDemo.java
.....\Card.java
.....\CardDemo.java
.....\CastDemo.java
.....\day10.txt
.....\FiledAccessDemo.java
.....\FinalDmeo.java
.....\question
.....\........\MultiChoice.java
.....\........\Option.java
.....\........\Question.java
.....\........\QuestionDemo.java
.....\........\SingleQuestion.java
.....\ShapeDemo.png
.....\StaticDemo.java