In this blog, we will be solving assignments based on an algorithm and data structures.
You are required to develop a Java program with a graphical user interface (GUI) to render
2D objects based on user input, visualize some transiSons between states, and demonstrate
how you’ve preserved states between transiSons. You must use JavaFX to implement the
The program should have the following functionality:
1. An interacSve component which has the following acSons associated with it; the
component can accept user input, where assuming the input is valid, a shape will be
displayed on the main screen. The program should accept the following shapes as input:
triangle, rectangle, hexagon.
1.1. You need to ensure that the user input is validated, and feedback is given when
invalid input is entered.
1.2. The program should only allow the user to enter one valid shape at a Sme.
1.3. The main screen should only display one shape at a Sme.
2. An interacSve component which has the following acSons associated to it; the
component can accept user input, where assuming the input is valid, the currently
displayed shape will be filled using the color of the valid input. The program should
accept the following colors as input: red, green, grey.
2.1. You need to ensure that the user input is validated, and feedback is given when
invalid input is entered.
2.2. The program should only allow the user to enter one valid color at a Sme.
2.3. The currently displayed shape should only be filled with one colour at a Sme.
3. Any potenSal error states should not crash the program or generate generic error
messages. The program should clearly indicate to the user that an error has occurred,
with specific informaSon on why the error occurred and what valid acSon(s) are
Given the brief stated above, your tasks are as follows:
1. implementation: Create a class called Shapes. Implement the funcSonality from the
brief stated above, ensuring that you have covered all points.
2. FuncIonality/TesIng: Show evidence that ALL the methods in the Shapes class and the opSons in the GUI have been individually tested and that the Shapes class can be
compiled and run from the command line. You need to ensure that all images are
readable at default/100% zoom.
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