Interactive Variables

public class Bicycle {
    // === INSTANCE VARIABLES ===
    // Each Bicycle object gets its own copy of these.
    int cadence = 0;
    double speed = 0;
    int gear = 1;
    boolean isBraking = false;
    // === STATIC (CLASS) VARIABLES ===
    // Shared across all Bicycle objects. One copy for the whole class.
    static String brand = "GeminiCycle";
    static int wheelCount = 2;
    public void someMethod() {
        // === LOCAL VARIABLES ===
        // Temporary state, only exists within this method's execution.
        
        System.out.println("Method executed with current variable states.");
    }
    
    // Naming Convention Example
    public void namingConventionExample() {
        // A good variable name is descriptive and follows camelCase.
        int numberOfGears = 6; 
        // Avoid single-letter names unless for temporary loops (i, j, k).
        int x = 10; // What does 'x' represent? 
        // Constants are usually in all caps with underscores.
        final int MAX_SPEED = 30;
    }
}