This application is used in the following content:

• Video: Debugging Java code in IntelliJ IDEA
• Blog post: Debugging Java code in IntelliJ IDEA

If you'd like to follow along, please check out the branch debugger.

A Java application for tracking student test scores. This application allows you to manage student records and their associated test scores, reading data from CSV files and providing a clear summary output.

• Read student test scores from CSV files
• Validate and store student information
• Track multiple test scores per student
• Calculate and display average test scores per student
• Generate summary reports of student performance
• Input validation for all data fields

• Java 21 or higher
• Maven 3.x

To build the project, run:

mvn verify

In class Main, click the Run button in the gutter next to the class declaration or main method.

To run the application from the command line using Maven, run:

mvn exec:java -Dexec.mainClass="Main"

The application will read from test-scores.csv in the project root directory and display a summary of all students and their scores.

The application includes several validation rules:

• Student IDs and names cannot be null or empty
• Test names cannot be null or empty
• Test scores must be between 0 and 10
• Test dates cannot be null
• CSV file must contain at least 5 columns per row

• Main.java: Application entry point and CSV processing
• Student.java: Student data model with validation
• TestScore.java: Test score data model with validation

• JUnit Jupiter 5.10.0 (for testing)
• Maven Surefire Plugin 3.1.2 (for running tests)

This demo application was built with the help of:

• JetBrains AI Assistant
• JetBrains Junie