Java read csv file. Clear all rows and columns in a JTable. Sort the table based on different column

The student's programming assignment.

CSV Reader with Sorting
Program Description:
Overview: The CSV Reader with Sorting is a Java Swing-based application designed to read and display data from CSV files in a tabular format. This program offers a user-friendly graphical interface that allows users to open CSV files, view the data, and sort the table based on different columns.
Features:
1. File Selection:
o Users can open CSV files using a file chooser dialog.
o The file chooser filters files to display only those with a ".csv" extension.
2. Table Display:
o The program uses a JTable to display CSV data in a tabular format.
o Adjustable font sizes for the table cells and header enhance readability.
3. Sorting Functionality:
o Users can sort the table by clicking on column headers.
o Sorting is facilitated by the use of TableRowSorter.
4. User Interface:
o The graphical interface includes a button to open the file chooser and initiate data loading.
o The application provides a clean and simple design for a smooth user experience.
How to Use:
1. Launch the program.
2. Click the "Open CSV File" button to select a CSV file using the file chooser.
3. The selected CSV file is loaded into the table, and users can interact with the data.
4. Click on column headers to sort the table based on the selected column.
Customization:
• Developers can customize the font, font size, and appearance of the table and button.
• The program can be extended to include additional features like filtering and data manipulation.
Technical Details:
• The program is built using Java Swing for the graphical user interface.
• The DefaultTableModel is employed to manage the data in the JTable.
• Sorting functionality is implemented using TableRowSorter.
Purpose: This program serves as an educational tool for students learning Java Swing and GUI programming. It demonstrates how to create a simple yet functional application for reading and manipulating CSV data, providing hands-on experience with event handling, file input/output, and table management.
Note to Students: Feel free to explore and modify the code to enhance the program's features. Experiment with different fonts, colors, and additional functionalities to deepen your understanding of Java Swing and GUI development.
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This description is intended to provide an overview of the program's purpose, features, and usage. Adjustments can be made based on the specific focus or requirements of the student task.

Here's an example of a simple CSV file with sample data that you can use to test your CSV Reader program:
csv
Name,Age,Gender,Country
John Doe,25,Male,USA
Jane Smith,30,Female,Canada
Robert Johnson,22,Male,UK
Emily White,28,Female,Australia
David Brown,35,Male,Germany
Sophia Miller,27,Female,France
Save this content to a file with a ".csv" extension, and use your program to open and read this file. The data includes columns for Name, Age, Gender, and Country. The program should be able to display this data in a tabular format, and you can test the sorting functionality by clicking on the column headers.
Feel free to modify or extend this sample data according to your needs for testing the CSV Reader program.

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