1968: Abstract Class Shape(choose one from E and F)

define a Shape class as follows:

1)contains two data fields: color(String type),filled(boolean type)

2)define a no-arg constructor and a constructor with all data fields

3)define two abstract methods,perimeter() and area()

define a Circle class extending Shape class:

1) add a new property, radius

2)define a no-arg constructor and a constructor with all data fields

3)implement the abstract methods : perimeter() and area()

define a Rectangle class extending Shape class:

1) add  two new properties, width and length

2)define a no-arg constructor and a constructor with all data fields

3)implement the abstract methods : perimeter() and area()

Note:the pi for caculating an area of a circle is 3.14159

there are many cases，for each case，input “C”and “R” to denote a circle and rectangle，and then input the shape's information;
for circle,input its radius,for rectangle,input its width and length

if the shape is filled,output its all properties and its area;
if the shape is not filled,output its all properties and its perimeter;
the area and the perimeter keep 2 decimals

C red true 4.5
R pink false 3.5 4.8

The circle: red,filled,its area is 63.62
The rectangle: pink,not filled,its perimeter is 16.60