lesson 1:
    - static initializer in Mines.java (static block initializing RANDOM_GENERATOR)
    - static initializer in MinesUI.java (static block initializing BUTTON_THEMES)
    - constructor overloading demonstrated across project (e.g., RandomNumberGenerator and Mines constructors)

lesson 2:
    - inheritance: Mines extends GameBoard (GameBoard.java → Mines.java)
    - custom exception class: InvalidMoveException (thrown in Mines.reveal)
    - throwing exceptions in Mines.reveal()
    - catching exceptions in MinesUI.handleReveal() within UI logic

lesson 3:
    - method overriding: Mines overrides abstract GameBoard.reset()
    - substitution: GameBoard constructor called via super(width, height) inside Mines

lesson 4:
    - abstract class: GameBoard.java
    - abstract method: reset() defined in GameBoard
    - implementation of abstract method in Mines.reset()

lesson 5:
    - collections: MinesUI stores buttons in List<Button> (ArrayList)
    - iterators: MinesUI.disableAllButtons() uses Iterator<Button>

lesson 6:
    - lambda expressions: Mines.forEachNeighbor() uses Consumer<Integer> with lambdas
    - lambda expressions: MinesUI.createGrid() uses lambdas for event handlers (setOnMouseEntered, setOnMouseExited, setOnMouseClicked)

lesson 8:
    - file reading: MinesScore.readScoresFromFile() uses BufferedReader and FileReader
    - file writing: MinesScore.appendScoreToFile() uses BufferedWriter and FileWriter
    - parsing and formatting data via DateTimeFormatter
    - path management using String file paths (e.g., SCORE_FILE)
    - Scanner usage present in Main CLI for input collection

lesson 9:
    - JavaFX application structure: MyGame extends Application and overrides start()
    - JavaFX UI design: MinesUI builds scenes, stages, layouts, buttons, labels, handlers

lesson 10:
    - JUnit tests included in external test files (MinesTest, MinesScoreTest, etc.)