java programming

In this problem, you will create an electronic game board that can be used to play Connect Four. The final GUI will contain 42 (6 x 7) panes that contain either a white, yellow or red circle. Figure 1 shows an example board. ConnectFourPane Class: The ConnectFourPane class is an extended StackPane that will display a single white, yellow or red circle. There are two constructors: a no-arg constructor that creates a white circle and a constructor with a single character parameter containing ('w, 'y' or T') indicating what color circle should be initially displayed in the pane. The class has a single character property named color that will contain either a 'w, 'y' or r indicating what color circle is currently displayed in the pane. Figure 1 Connect Four Board A. Complete the UML class diagram for the encapsulated ConnectFourPane class. The class includes the constructors mentioned above, a setRadius() method for the circle and the circle (Circle) and color (char) properties (5pts)