This program is for a school assignment. Here are the requirements: Write a Java application that effectively uses Java collections to store pairs of unique colors and their unique hexadecimal values. For example, “Red” -> “FF0000”. Store at least 8 and up to 20 of these pairs. For example, create a method like “buildColors” that returns an appropriate Java collection populated with at least 8 colors. Then write a GUI that displays the hexadecimal values using radio buttons to select a value. When selected the background of the GUI should change to that color. The GUI should iterate over the collection to build the radio buttons dynamically; that is, you should only hard code the addition of the colors to the collection but not when building the radio buttons for the UI. That is, if the number of colors in the collection were changed from 10 to 15 in the “buildColors” method, the rest of the UI code and application would function appropriately without requiring a code change.

Introduction:

This Java application is designed to fulfill the requirements of the school assignment. The program is required to effectively use Java collections to store pairs of unique colors and their corresponding hexadecimal values. These color-value pairs must be stored in a Java collection and the program should be able to display the hexadecimal values using radio buttons in a graphical user interface (GUI). When a radio button is selected, the background color of the GUI should change accordingly. The GUI should dynamically build the radio buttons based on the collection, allowing for flexibility if the number of colors in the collection changes.

Approach:

To meet the requirements of the assignment, the program needs to include the following components:

1. Build a Java Collection of color-value pairs:
– The program should include a method named “buildColors” that returns a Java collection populated with at least 8 color-value pairs.
– The collection should be populated with unique colors and their corresponding hexadecimal values.
– The program should store a minimum of 8 and a maximum of 20 color-value pairs.

2. Create a GUI to display the hexadecimal values:
– The GUI should include radio buttons to select a hexadecimal value.
– When a radio button is selected, the background color of the GUI should change to the selected color.
– The GUI should dynamically build the radio buttons based on the color-value pairs stored in the collection.
– The GUI should be able to accommodate any changes in the number of color-value pairs without requiring code modification.

Implementation:

To implement the program, the following steps can be followed:

1. Create a Java class for the application:
– Create a new Java class and name it appropriately, such as “ColorGUIApp”.
– Import the necessary Java packages, such as javax.swing for GUI components.

2. Implement the “buildColors” method to populate the collection:
– Declare a method named “buildColors” that returns a Java collection, such as ArrayList, HashMap, or TreeSet.
– Inside the method, create a new instance of the collection.
– Add at least 8 unique color-value pairs to the collection. For example, “Red” -> “FF0000”, “Blue” -> “0000FF”, etc.
– Return the populated collection.

3. Implement the GUI:
– Create a new JFrame to serve as the main window of the GUI.
– Set the layout manager of the JFrame to a suitable layout, such as GridLayout or FlowLayout.
– Retrieve the collection of color-value pairs by calling the “buildColors” method.
– Iterate over the collection and dynamically create radio buttons for each color-value pair.
– Add each radio button to the JFrame.
– Implement an ActionListener for the radio buttons to change the background color of the JFrame when a radio button is selected.
– Display the GUI by setting the JFrame visible.

4. Test the application:
– Compile and run the application.
– Verify that the GUI displays the correct number of radio buttons based on the number of color-value pairs in the collection.
– Test the functionality of the radio buttons by selecting different colors and observing the changes in the background color.

Conclusion:

In conclusion, this Java application effectively uses Java collections to store pairs of unique colors and their corresponding hexadecimal values. The application also includes a GUI that displays the hexadecimal values using radio buttons and changes the background color of the GUI when a radio button is selected. The GUI dynamically builds the radio buttons based on the collection, providing flexibility if the number of color-value pairs changes.

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