Design and Implement - Abstract Class Shape - IT Computer Science Assignment Help

Assignment Task :

Assessment:  This assignment is worth 40% of the final mark for this subject. Do not be overwhelmed by the length of this file. A lot of its contents are examples, to help you understand the problem a bit better. Focus on one task at a time. It is a good idea to refer to the Java classes that have been provided with the assignment as a good starting point, after you have read the entire specification carefully.

Task 1
a) Design and implement
• The class to represent a drawing window
• The abstract class Shape
• The class that represents a line

b) Test your classes with the EightLines program below. The program must be able to run with your classes without any change.

Task 2
a) Design and implement the rest of the shapes
b) Test your classes with the program HouseForSale below. It should produce the drawing 

Task 3
(a) In the class Window, implement the following method
void writeSpecToFile(String fileName) The method saves the specification of the drawing window (as opposed to the display image of the drawing) in the specified text file.

(b) Write a program, called T3Main.java, to generate a drawing (just like the one in the class House- ForSale), display it on the screen and save it to a text file called T3Drawing.txt

Task 4
(a) In the class Window, implement the following static method (class method) Window readSpecFromFile(String fileName)
The method reads the text file, constructs and returns the Window object representing the drawing specified in the text file.
The input text file for this method has the same format as described in Task 3.

(b) Write a program, call it T4Main.java, to read the description of a drawing from a text file, e.g. T3Drawing.txt, and display the drawing on the screen.

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