Assignment 4: exposure to Java Swing

CIS 212 Assignment 4: 100 points
The goal of this assignment is to gain exposure to Java Swing and to build a user interface with a
mix of standard and custom widgets. This project will involve creating a simple interactive paint
application.
1. [10] Write a Java application that opens a UI window (hint: see the JFrame class).
2. [20] Implement a class to serve as a template for points that will be drawn to the screen.
Each point can have a distinct 2D position, color, and size, so the class should have private
instance variables to represent this state.
3. [20] Add a canvas to your window which draws points when the user clicks the canvas or
drags the mouse on the canvas (hint: see the JPanel class). To accomplish this, your application
should maintain an ArrayList of instances of your point class from part 2; your mouse listeners
should create instances of the class and add them to the list while your implementation of the
JPanel paintComponent method should paint all point instances in the list to the screen.
3. [10] Add at least four buttons to your window which allow the user to select the current
point color. This point color should affect any points drawn from the time the color is selected
until the time that another color is selected.
4. [10] Add at least three buttons to your window which will allow the user to select the current
point size. This point size should affect any points drawn from the time the size is selected until
the time that another size is selected.
5. [10] Add a clear button to your frame which, when clicked, immediately clears anything that
has been drawn to your canvas.
6. [20] Write code that is clear and efficient. Specifically, your code should be indented with
respect to code blocks, avoid unnecessarily repetitive code, avoid code that is commented out
or otherwise unused, use descriptive and consistent class/method/variable names, etc.
Your window should look something like:
Please zip only your Java source file(s), i.e., .java file(s), into a zipped file, rename that file as
<Your Full NameAssignment4.zip, e.g., BillGatesAssignment4.zip, and then upload that file to
Canvas. Do not put the Java source file(s) in a folder and zip that folder; instead, please directly
zip all the Java source files into a single zipped file. You are free to use whatever tools/IDEs you
prefer to complete your assignment.